diff --git a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinConnectionSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinConnectionSelfTest.java
index 917ac650e28c1..17c871b09707f 100644
--- a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinConnectionSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinConnectionSelfTest.java
@@ -74,7 +74,6 @@
 import static java.sql.Statement.RETURN_GENERATED_KEYS;
 import static org.apache.ignite.cache.query.SqlFieldsQuery.DFLT_LAZY;
 import static org.apache.ignite.configuration.ClientConnectorConfiguration.DFLT_PORT;
-import static org.apache.ignite.internal.processors.odbc.SqlStateCode.TRANSACTION_STATE_EXCEPTION;
 import static org.apache.ignite.testframework.GridTestUtils.assertThrows;
 import static org.apache.ignite.testframework.GridTestUtils.assertThrowsAnyCause;
 import static org.apache.ignite.testframework.GridTestUtils.getFieldValue;
@@ -1290,50 +1289,6 @@ public void testRollback() throws Exception {
         }
     }
 
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testBeginFails() throws Exception {
-        try (Connection conn = DriverManager.getConnection(urlWithPartitionAwarenessProp)) {
-            conn.createStatement().execute("BEGIN");
-
-            fail("Exception is expected");
-        }
-        catch (SQLException e) {
-            assertEquals(TRANSACTION_STATE_EXCEPTION, e.getSQLState());
-        }
-    }
-
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testCommitIgnored() throws Exception {
-        try (Connection conn = DriverManager.getConnection(urlWithPartitionAwarenessProp)) {
-            conn.setAutoCommit(false);
-            conn.createStatement().execute("COMMIT");
-
-            conn.commit();
-        }
-        // assert no exception
-    }
-
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testRollbackIgnored() throws Exception {
-        try (Connection conn = DriverManager.getConnection(urlWithPartitionAwarenessProp)) {
-            conn.setAutoCommit(false);
-
-            conn.createStatement().execute("ROLLBACK");
-
-            conn.rollback();
-        }
-        // assert no exception
-    }
-
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineIndexTree.java b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineIndexTree.java
index 928284a174c1b..79e863c9dd4b5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineIndexTree.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineIndexTree.java
@@ -154,7 +154,7 @@ public InlineIndexTree(
 
         this.idxRowCache = idxRowCache;
 
-        mvccEnabled = grpCtx.mvccEnabled();
+        mvccEnabled = false;
 
         if (!initNew) {
             // Init from metastore.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
index 64f5d9bbdd605..99bed931a2895 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
@@ -287,13 +287,6 @@ public CacheGroupContext(
         topValidators = Collections.unmodifiableCollection(topologyValidators(ccfg, ctx.kernalContext().plugins()));
     }
 
-    /**
-     * @return Mvcc flag.
-     */
-    public boolean mvccEnabled() {
-        return mvccEnabled;
-    }
-
     /**
      * @return {@code True} if this is cache group for one of system caches.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManager.java
index d88788bdccd69..81a9787f9e8d5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManager.java
@@ -51,7 +51,6 @@
 import org.apache.ignite.internal.util.lang.GridIterator;
 import org.apache.ignite.internal.util.lang.IgniteInClosure2X;
 import org.apache.ignite.internal.util.lang.IgnitePredicateX;
-import org.apache.ignite.lang.IgniteBiTuple;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -198,17 +197,6 @@ public void invoke(GridCacheContext cctx, KeyCacheObject key, GridDhtLocalPartit
     @Nullable public CacheDataRow mvccRead(GridCacheContext cctx, KeyCacheObject key, MvccSnapshot mvccSnapshot)
         throws IgniteCheckedException;
 
-    /**
-     * For testing only.
-     *
-     * @param cctx Cache context.
-     * @param key Key.
-     * @return All stored versions for given key.
-     * @throws IgniteCheckedException If failed.
-     */
-    public List<IgniteBiTuple<Object, MvccVersion>> mvccAllVersions(GridCacheContext cctx, KeyCacheObject key)
-        throws IgniteCheckedException;
-
     /**
      * Returns iterator over the all row versions for the given key.
      *
@@ -983,17 +971,6 @@ GridCursor<CacheDataRow> mvccAllVersionsCursor(GridCacheContext cctx, KeyCacheOb
         public CacheDataRow mvccFind(GridCacheContext cctx, KeyCacheObject key, MvccSnapshot snapshot)
             throws IgniteCheckedException;
 
-        /**
-         * For testing only.
-         *
-         * @param cctx Cache context.
-         * @param key Key.
-         * @return All stored versions for given key.
-         * @throws IgniteCheckedException If failed.
-         */
-        List<IgniteBiTuple<Object, MvccVersion>> mvccFindAllVersions(GridCacheContext cctx, KeyCacheObject key)
-            throws IgniteCheckedException;
-
         /**
          * @return Data cursor.
          * @throws IgniteCheckedException If failed.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
index e785cf50c906d..1100e06ab0944 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
@@ -19,7 +19,6 @@
 
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -46,7 +45,6 @@
 import org.apache.ignite.internal.pagemem.FullPageId;
 import org.apache.ignite.internal.pagemem.PageMemory;
 import org.apache.ignite.internal.pagemem.wal.IgniteWriteAheadLogManager;
-import org.apache.ignite.internal.pagemem.wal.record.delta.DataPageMvccMarkUpdatedRecord;
 import org.apache.ignite.internal.pagemem.wal.record.delta.DataPageMvccUpdateNewTxStateHintRecord;
 import org.apache.ignite.internal.pagemem.wal.record.delta.DataPageMvccUpdateTxStateHintRecord;
 import org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion;
@@ -89,7 +87,6 @@
 import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccUpdateResult;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.data.ResultType;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccDataPageClosure;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccFirstRowTreeClosure;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccLinkAwareSearchRow;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccMaxSearchRow;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccMinSearchRow;
@@ -118,24 +115,18 @@
 import org.apache.ignite.internal.util.typedef.X;
 import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.internal.util.typedef.internal.U;
-import org.apache.ignite.lang.IgniteBiTuple;
 import org.apache.ignite.lang.IgnitePredicate;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+
 import static java.lang.Boolean.TRUE;
 import static org.apache.ignite.internal.pagemem.PageIdAllocator.FLAG_IDX;
 import static org.apache.ignite.internal.pagemem.PageIdAllocator.INDEX_PARTITION;
 import static org.apache.ignite.internal.processors.cache.GridCacheUtils.TTL_ETERNAL;
 import static org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtPartitionState.OWNING;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.INITIAL_VERSION;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_COUNTER_NA;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_CRD_COUNTER_NA;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_HINTS_BIT_OFF;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_KEY_ABSENT_BEFORE_OFF;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_OP_COUNTER_MASK;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.MVCC_OP_COUNTER_NA;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.compare;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.compareNewVersion;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.isVisible;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.mvccVersionIsValid;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.state;
@@ -643,15 +634,6 @@ private Iterator<CacheDataStore> cacheData(boolean primary, boolean backup, Affi
         return row;
     }
 
-    /** {@inheritDoc} */
-    @Override public List<IgniteBiTuple<Object, MvccVersion>> mvccAllVersions(GridCacheContext cctx, KeyCacheObject key)
-        throws IgniteCheckedException {
-        CacheDataStore dataStore = dataStore(cctx, key);
-
-        return dataStore != null ? dataStore.mvccFindAllVersions(cctx, key) :
-            Collections.emptyList();
-    }
-
     /** {@inheritDoc} */
     @Override public GridCursor<CacheDataRow> mvccAllVersionsCursor(GridCacheContext cctx,
         KeyCacheObject key, Object x) throws IgniteCheckedException {
@@ -1467,9 +1449,9 @@ public CacheDataStoreImpl(
             this.busyLock = busyLock;
             this.log = log;
 
-            PartitionUpdateCounter delegate = grp.mvccEnabled() ? new PartitionUpdateCounterMvccImpl(grp) :
-                !grp.persistenceEnabled() || grp.hasAtomicCaches() ? new PartitionUpdateCounterVolatileImpl(grp) :
-                    new PartitionUpdateCounterTrackingImpl(grp);
+            PartitionUpdateCounter delegate = !grp.persistenceEnabled() || grp.hasAtomicCaches() ?
+                new PartitionUpdateCounterVolatileImpl(grp) :
+                new PartitionUpdateCounterTrackingImpl(grp);
 
             pCntr = grp.shared().logger(PartitionUpdateCounterDebugWrapper.class).isDebugEnabled() ?
                 new PartitionUpdateCounterDebugWrapper(partId, delegate) : new PartitionUpdateCounterErrorWrapper(partId, delegate);
@@ -1547,18 +1529,7 @@ void decrementSize(int cacheId) {
          * @return {@code True} if there are no items in the store.
          */
         @Override public boolean isEmpty() {
-            try {
-                /*
-                 * TODO https://issues.apache.org/jira/browse/IGNITE-10082
-                 * Using of counters is cheaper than tree operations. Return size checking after the ticked is resolved.
-                 */
-                return grp.mvccEnabled() ? dataTree.isEmpty() : storageSize.sum() == 0;
-            }
-            catch (IgniteCheckedException e) {
-                U.error(grp.shared().logger(IgniteCacheOffheapManagerImpl.class), "Failed to perform operation.", e);
-
-                return false;
-            }
+            return storageSize.sum() == 0;
         }
 
         /** {@inheritDoc} */
@@ -1662,7 +1633,7 @@ void decrementSize(int cacheId) {
          */
         private boolean canUpdateOldRow(GridCacheContext cctx, @Nullable CacheDataRow oldRow, DataRow dataRow)
             throws IgniteCheckedException {
-            if (oldRow == null || cctx.queries().enabled() || grp.mvccEnabled())
+            if (oldRow == null || cctx.queries().enabled())
                 return false;
 
             if (oldRow.expireTime() != dataRow.expireTime())
@@ -2468,14 +2439,7 @@ private int cleanup0(GridCacheContext cctx, @Nullable List<MvccLinkAwareSearchRo
         /** {@inheritDoc} */
         @Override public void updateTxState(GridCacheContext cctx, CacheSearchRow row)
             throws IgniteCheckedException {
-            assert grp.mvccEnabled();
-            assert mvccVersionIsValid(row.mvccCoordinatorVersion(), row.mvccCounter(), row.mvccOperationCounter()) : row;
-
-            // Need an extra lookup because the row may be already cleaned by another thread.
-            CacheDataRow row0 = dataTree.findOne(row, CacheDataRowAdapter.RowData.LINK_ONLY);
-
-            if (row0 != null)
-                rowStore.updateDataRow(row0.link(), mvccUpdateTxStateHint, null, grp.statisticsHolderData());
+            assert false; // ex mvcc code.
         }
 
         /** {@inheritDoc} */
@@ -2755,67 +2719,13 @@ private void clearPendingEntries(GridCacheContext cctx, CacheDataRow oldRow)
 
             int cacheId = grp.sharedGroup() ? cctx.cacheId() : CU.UNDEFINED_CACHE_ID;
 
-            CacheDataRow row;
-
-            if (grp.mvccEnabled()) {
-                MvccFirstRowTreeClosure clo = new MvccFirstRowTreeClosure(cctx);
-
-                dataTree.iterate(
-                    new MvccMaxSearchRow(cacheId, key),
-                    new MvccMinSearchRow(cacheId, key),
-                    clo
-                );
-
-                row = clo.row();
-            }
-            else
-                row = dataTree.findOne(new SearchRow(cacheId, key), CacheDataRowAdapter.RowData.NO_KEY);
+            CacheDataRow row = dataTree.findOne(new SearchRow(cacheId, key), CacheDataRowAdapter.RowData.NO_KEY);
 
             afterRowFound(row, key);
 
             return row;
         }
 
-        /** {@inheritDoc} */
-        @Override public List<IgniteBiTuple<Object, MvccVersion>> mvccFindAllVersions(
-            GridCacheContext cctx,
-            KeyCacheObject key
-        ) throws IgniteCheckedException {
-            assert grp.mvccEnabled();
-
-            // Note: this method is intended for testing only.
-
-            key.valueBytes(cctx.cacheObjectContext());
-
-            int cacheId = grp.sharedGroup() ? cctx.cacheId() : CU.UNDEFINED_CACHE_ID;
-
-            GridCursor<CacheDataRow> cur = dataTree.find(
-                new MvccMaxSearchRow(cacheId, key),
-                new MvccMinSearchRow(cacheId, key)
-            );
-
-            List<IgniteBiTuple<Object, MvccVersion>> res = new ArrayList<>();
-
-            long crd = MVCC_CRD_COUNTER_NA;
-            long cntr = MVCC_COUNTER_NA;
-            int opCntr = MVCC_OP_COUNTER_NA;
-
-            while (cur.next()) {
-                CacheDataRow row = cur.get();
-
-                if (compareNewVersion(row, crd, cntr, opCntr) != 0) // deleted row
-                    res.add(F.t(null, row.newMvccVersion()));
-
-                res.add(F.t(row.value(), row.mvccVersion()));
-
-                crd = row.mvccCoordinatorVersion();
-                cntr = row.mvccCounter();
-                opCntr = row.mvccOperationCounter();
-            }
-
-            return res;
-        }
-
         /** {@inheritDoc} */
         @Override public GridCursor<CacheDataRow> mvccAllVersionsCursor(
             GridCacheContext cctx, KeyCacheObject key, Object x
@@ -2880,17 +2790,7 @@ private void afterRowFound(@Nullable CacheDataRow row, KeyCacheObject key) throw
         @Override public GridCursor<? extends CacheDataRow> cursor(MvccSnapshot mvccSnapshot)
             throws IgniteCheckedException {
 
-            GridCursor<? extends CacheDataRow> cursor;
-            if (mvccSnapshot != null) {
-                assert grp.mvccEnabled();
-
-                cursor = dataTree.find(null, null,
-                    new MvccFirstVisibleRowTreeClosure(grp.singleCacheContext(), mvccSnapshot), null);
-            }
-            else
-                cursor = dataTree.find(null, null);
-
-            return cursor;
+            return dataTree.find(null, null);
         }
 
         /** {@inheritDoc} */
@@ -2933,19 +2833,7 @@ private void afterRowFound(@Nullable CacheDataRow row, KeyCacheObject key) throw
                 upperRow = upper != null ? new SearchRow(CU.UNDEFINED_CACHE_ID, upper) : null;
             }
 
-            GridCursor<? extends CacheDataRow> cursor;
-
-            if (snapshot != null) {
-                assert grp.mvccEnabled();
-
-                GridCacheContext cctx = grp.sharedGroup() ? grp.shared().cacheContext(cacheId) : grp.singleCacheContext();
-
-                cursor = dataTree.find(lowerRow, upperRow, new MvccFirstVisibleRowTreeClosure(cctx, snapshot), x);
-            }
-            else
-                cursor = dataTree.find(lowerRow, upperRow, x);
-
-            return cursor;
+            return dataTree.find(lowerRow, upperRow, x);
         }
 
         /** {@inheritDoc} */
@@ -3266,43 +3154,16 @@ public boolean found() {
      * Mvcc remove handler.
      */
     private static final class MvccMarkUpdatedHandler extends PageHandler<MvccUpdateDataRow, Boolean> {
-        /** */
-        private final CacheGroupContext grp;
-
         /** */
         private MvccMarkUpdatedHandler(CacheGroupContext grp) {
-            this.grp = grp;
         }
 
         /** {@inheritDoc} */
         @Override public Boolean run(int cacheId, long pageId, long page, long pageAddr, PageIO io, Boolean walPlc,
             MvccUpdateDataRow updateDataRow, int itemId, IoStatisticsHolder statHolder) throws IgniteCheckedException {
-            assert grp.mvccEnabled();
-
-            PageMemory pageMem = grp.dataRegion().pageMemory();
-            IgniteWriteAheadLogManager wal = grp.shared().wal();
-
-            DataPageIO iox = (DataPageIO)io;
-
-            int off = iox.getPayloadOffset(pageAddr, itemId,
-                pageMem.realPageSize(grp.groupId()), MVCC_INFO_SIZE);
+            assert false; // ex mvcc code.
 
-            long newCrd = iox.newMvccCoordinator(pageAddr, off);
-            long newCntr = iox.newMvccCounter(pageAddr, off);
-            int newOpCntr = iox.rawNewMvccOperationCounter(pageAddr, off);
-
-            assert newCrd == MVCC_CRD_COUNTER_NA || state(grp, newCrd, newCntr, newOpCntr) == TxState.ABORTED;
-
-            int keyAbsentBeforeFlag = updateDataRow.isKeyAbsentBefore() ? (1 << MVCC_KEY_ABSENT_BEFORE_OFF) : 0;
-
-            iox.updateNewVersion(pageAddr, off, updateDataRow.mvccCoordinatorVersion(), updateDataRow.mvccCounter(),
-                updateDataRow.mvccOperationCounter() | keyAbsentBeforeFlag, TxState.NA);
-
-            if (isWalDeltaRecordNeeded(pageMem, cacheId, pageId, page, wal, walPlc))
-                wal.log(new DataPageMvccMarkUpdatedRecord(cacheId, pageId, itemId,
-                    updateDataRow.mvccCoordinatorVersion(), updateDataRow.mvccCounter(), updateDataRow.mvccOperationCounter()));
-
-            return TRUE;
+            return false;
         }
     }
 
@@ -3374,81 +3235,16 @@ private MvccUpdateTxStateHintHandler(CacheGroupContext grp) {
      * Applies changes to the row.
      */
     private static final class MvccApplyChangesHandler extends PageHandler<MvccDataRow, Boolean> {
-        /** */
-        private final CacheGroupContext grp;
-
         /** */
         private MvccApplyChangesHandler(CacheGroupContext grp) {
-            this.grp = grp;
         }
 
         /** {@inheritDoc} */
         @Override public Boolean run(int cacheId, long pageId, long page, long pageAddr, PageIO io, Boolean walPlc,
             MvccDataRow newRow, int itemId, IoStatisticsHolder statHolder) throws IgniteCheckedException {
-            assert grp.mvccEnabled();
+            assert false; // ex mvcc code.
 
-            DataPageIO iox = (DataPageIO)io;
-
-            PageMemory pageMem = grp.dataRegion().pageMemory();
-            IgniteWriteAheadLogManager wal = grp.shared().wal();
-
-            int off = iox.getPayloadOffset(pageAddr, itemId,
-                pageMem.realPageSize(grp.groupId()), MVCC_INFO_SIZE);
-
-            long crd = iox.mvccCoordinator(pageAddr, off);
-            long cntr = iox.mvccCounter(pageAddr, off);
-            int opCntrAndHint = iox.rawMvccOperationCounter(pageAddr, off);
-            int opCntr = opCntrAndHint & MVCC_OP_COUNTER_MASK;
-            byte txState = (byte)(opCntrAndHint >>> MVCC_HINTS_BIT_OFF);
-
-            long newCrd = iox.newMvccCoordinator(pageAddr, off);
-            long newCntr = iox.newMvccCounter(pageAddr, off);
-            int newOpCntrAndHint = iox.rawNewMvccOperationCounter(pageAddr, off);
-            int newOpCntr = newOpCntrAndHint & MVCC_OP_COUNTER_MASK;
-            byte newTxState = (byte)(newOpCntrAndHint >>> MVCC_HINTS_BIT_OFF);
-
-            assert crd == newRow.mvccCoordinatorVersion();
-            assert cntr == newRow.mvccCounter();
-            assert opCntr == newRow.mvccOperationCounter();
-
-            assert newRow.mvccTxState() != TxState.NA : newRow.mvccTxState();
-
-            if (txState != newRow.mvccTxState() && newRow.mvccTxState() != TxState.NA) {
-                assert txState == TxState.NA : txState;
-
-                iox.rawMvccOperationCounter(pageAddr, off, opCntr | (newRow.mvccTxState() << MVCC_HINTS_BIT_OFF));
-
-                if (isWalDeltaRecordNeeded(pageMem, cacheId, pageId, page, wal, walPlc))
-                    wal.log(new DataPageMvccUpdateTxStateHintRecord(cacheId, pageId, itemId, newRow.mvccTxState()));
-            }
-
-            if (compare(newCrd,
-                newCntr,
-                newOpCntr,
-                newRow.newMvccCoordinatorVersion(),
-                newRow.newMvccCounter(),
-                newRow.newMvccOperationCounter()) != 0) {
-
-                assert newRow.newMvccTxState() == TxState.NA || newRow.newMvccCoordinatorVersion() != MVCC_CRD_COUNTER_NA;
-
-                iox.updateNewVersion(pageAddr, off, newRow.newMvccCoordinatorVersion(), newRow.newMvccCounter(),
-                    newRow.newMvccOperationCounter(), newRow.newMvccTxState());
-
-                if (isWalDeltaRecordNeeded(pageMem, cacheId, pageId, page, wal, walPlc))
-                    wal.log(new DataPageMvccMarkUpdatedRecord(cacheId, pageId, itemId,
-                        newRow.newMvccCoordinatorVersion(), newRow.newMvccCounter(),
-                        newRow.newMvccOperationCounter() | (newRow.newMvccTxState() << MVCC_HINTS_BIT_OFF)));
-            }
-            else if (newTxState != newRow.newMvccTxState() && newRow.newMvccTxState() != TxState.NA) {
-                assert newTxState == TxState.NA : newTxState;
-
-                iox.rawNewMvccOperationCounter(pageAddr, off, newOpCntr | (newRow.newMvccTxState() << MVCC_HINTS_BIT_OFF));
-
-                if (isWalDeltaRecordNeeded(pageMem, cacheId, pageId, page, wal, walPlc))
-                    wal.log(new DataPageMvccUpdateNewTxStateHintRecord(cacheId, pageId, itemId, newRow.newMvccTxState()));
-            }
-
-            return TRUE;
+            return false;
         }
     }
 }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionDemander.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionDemander.java
index 4b80722218556..fd68fec7f8150 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionDemander.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionDemander.java
@@ -637,13 +637,9 @@ else if (supplyMsg.error() != null)
                                 );
 
                                 try {
-                                    if (grp.mvccEnabled())
-                                        mvccPreloadEntries(topVer, node, p, infosWrap);
-                                    else {
-                                        preloadEntries(topVer, part, infosWrap);
+                                    preloadEntries(topVer, part, infosWrap);
 
-                                        rebalanceFut.onReceivedKeys(p, e.getValue().infos().size(), node);
-                                    }
+                                    rebalanceFut.onReceivedKeys(p, e.getValue().infos().size(), node);
                                 }
                                 catch (GridDhtInvalidPartitionException ignored) {
                                     if (log.isDebugEnabled())
@@ -896,7 +892,6 @@ private void preloadEntries(
      * @throws IgniteInterruptedCheckedException If interrupted.
      */
     private boolean preloadEntry(CacheDataRow row, AffinityTopologyVersion topVer) throws IgniteCheckedException {
-        assert !grp.mvccEnabled();
         assert ctx.database().checkpointLockIsHeldByThread();
 
         GridCacheContext<?, ?> cctx = grp.sharedGroup() ? ctx.cacheContext(row.cacheId()) : grp.singleCacheContext();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionSupplier.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionSupplier.java
index 0cdcb8a61f757..9c21b3b1096b7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionSupplier.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionSupplier.java
@@ -38,15 +38,10 @@
 import org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion;
 import org.apache.ignite.internal.processors.cache.CacheGroupContext;
 import org.apache.ignite.internal.processors.cache.GridCacheEntryInfo;
-import org.apache.ignite.internal.processors.cache.GridCacheMvccEntryInfo;
 import org.apache.ignite.internal.processors.cache.IgniteRebalanceIterator;
 import org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtLocalPartition;
 import org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtPartitionState;
 import org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtPartitionTopology;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUpdateVersionAware;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUtils;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccVersionAware;
-import org.apache.ignite.internal.processors.cache.mvcc.txlog.TxState;
 import org.apache.ignite.internal.processors.cache.persistence.CacheDataRow;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
 import org.apache.ignite.internal.util.typedef.F;
@@ -324,17 +319,8 @@ public void handleDemandMessage(int topicId, UUID nodeId, GridDhtPartitionDemand
 
             long batchesCnt = 0;
 
-            CacheDataRow prevRow = null;
-
             while (iter.hasNext()) {
-                CacheDataRow row = iter.peek();
-
-                // Prevent mvcc entry history splitting into separate batches.
-                boolean canFlushHistory = !grp.mvccEnabled() ||
-                    prevRow != null && ((grp.sharedGroup() && row.cacheId() != prevRow.cacheId()) ||
-                        !row.key().equals(prevRow.key()));
-
-                if (canFlushHistory && supplyMsg.messageSize() >= msgMaxSize) {
+                if (supplyMsg.messageSize() >= msgMaxSize) {
                     if (++batchesCnt >= maxBatchesCnt) {
                         saveSupplyContext(contextId,
                             iter,
@@ -357,9 +343,7 @@ public void handleDemandMessage(int topicId, UUID nodeId, GridDhtPartitionDemand
                     }
                 }
 
-                row = iter.next();
-
-                prevRow = row;
+                CacheDataRow row = iter.next();
 
                 int part = row.partition();
 
@@ -542,29 +526,10 @@ else if (iter.isPartitionMissing(p)) {
      * @return Entry info.
      */
     private GridCacheEntryInfo extractEntryInfo(CacheDataRow row) {
-        GridCacheEntryInfo info = grp.mvccEnabled() ?
-            new GridCacheMvccEntryInfo() : new GridCacheEntryInfo();
+        GridCacheEntryInfo info = new GridCacheEntryInfo();
 
         info.key(row.key());
         info.cacheId(row.cacheId());
-
-        if (grp.mvccEnabled()) {
-            assert row.mvccCoordinatorVersion() != MvccUtils.MVCC_CRD_COUNTER_NA;
-
-            // Rows from rebalance iterator have actual states already.
-            if (row.mvccTxState() != TxState.COMMITTED)
-                return null;
-
-            ((MvccVersionAware)info).mvccVersion(row);
-            ((GridCacheMvccEntryInfo)info).mvccTxState(TxState.COMMITTED);
-
-            if (row.newMvccCoordinatorVersion() != MvccUtils.MVCC_CRD_COUNTER_NA &&
-                row.newMvccTxState() == TxState.COMMITTED) {
-                ((MvccUpdateVersionAware)info).newMvccVersion(row);
-                ((GridCacheMvccEntryInfo)info).newMvccTxState(TxState.COMMITTED);
-            }
-        }
-
         info.value(row.value());
         info.version(row.version());
         info.expireTime(row.expireTime());
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionsExchangeFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionsExchangeFuture.java
index eaf90a3612726..81687c2415059 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionsExchangeFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPartitionsExchangeFuture.java
@@ -1643,13 +1643,8 @@ private void distributedExchange() throws IgniteCheckedException {
         boolean skipWaitOnLocalJoin = localJoinExchange()
             && cctx.exchange().latch().canSkipJoiningNodes(initialVersion());
 
-        if (context().exchangeFreeSwitch() && isBaselineNodeFailed()) {
-            // Currently MVCC does not support operations on partially switched cluster.
-            if (cctx.kernalContext().coordinators().mvccEnabled())
-                waitPartitionRelease(EXCHANGE_FREE_LATCH_ID, true, false);
-            else
-                waitPartitionRelease(null, false, false);
-        }
+        if (context().exchangeFreeSwitch() && isBaselineNodeFailed())
+            waitPartitionRelease(null, false, false);
         else if (!skipWaitOnLocalJoin) { // Skip partition release if node has locally joined (it doesn't have any updates to be finished).
             boolean distributed = true;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPreloader.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPreloader.java
index 9823d03885ab8..a22f7a764d3cd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPreloader.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtPreloader.java
@@ -446,10 +446,6 @@ public void tryFinishEviction(GridDhtLocalPartition part) {
 
     /** {@inheritDoc} */
     @Override public boolean needForceKeys() {
-        // Do not use force key request with enabled MVCC.
-        if (grp.mvccEnabled())
-            return false;
-
         if (grp.rebalanceEnabled()) {
             IgniteInternalFuture<Boolean> rebalanceFut = rebalanceFuture();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopologyImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopologyImpl.java
index 818cf7eef0e45..a39212117ae21 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopologyImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopologyImpl.java
@@ -2894,9 +2894,7 @@ private void removeNode(UUID nodeId) {
                                 long gapStart = gaps.get(j * 2);
                                 long gapStop = gaps.get(j * 2 + 1);
 
-                                if (part.group().persistenceEnabled() &&
-                                    part.group().walEnabled() &&
-                                    !part.group().mvccEnabled()) {
+                                if (part.group().persistenceEnabled() && part.group().walEnabled()) {
                                     // Rollback record tracks applied out-of-order updates while finalizeUpdateCounters
                                     // return gaps (missing updates). The code below transforms gaps to updates.
                                     RollbackRecord rec = new RollbackRecord(part.group().groupId(), part.id(),
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionsStateValidator.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionsStateValidator.java
index d1dd063aa268d..8dafc6d67d5ed 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionsStateValidator.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionsStateValidator.java
@@ -26,7 +26,6 @@
 import java.util.Set;
 import java.util.TreeMap;
 import java.util.UUID;
-
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.cluster.ClusterNode;
 import org.apache.ignite.events.DiscoveryEvent;
@@ -99,10 +98,8 @@ public void validatePartitionCountersAndSizes(
                 ignoringNodes.add(id);
         }
 
-        if (!cctx.cache().cacheGroup(top.groupId()).mvccEnabled()) { // TODO: Remove "if" clause in IGNITE-9451.
-            // Validate cache sizes.
-            resSize = validatePartitionsSizes(top, messages, ignoringNodes);
-        }
+        // Validate cache sizes.
+        resSize = validatePartitionsSizes(top, messages, ignoringNodes);
 
         AffinityTopologyVersion topVer = fut.context().events().topologyVersion();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessor.java
index f41d61579e0cd..010d86b7adba7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessor.java
@@ -194,12 +194,6 @@ public interface MvccProcessor extends GridProcessor {
      */
     void ackTxRollback(MvccVersion updateVer);
 
-    /**
-     * @return {@code True} if at least one cache with
-     * {@code CacheAtomicityMode.TRANSACTIONAL_SNAPSHOT} mode is registered.
-     */
-    boolean mvccEnabled();
-
     /**
      * Pre-processes cache configuration before start.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
index b192559d215e9..6ebcca49ed262 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
@@ -57,7 +57,6 @@
 import org.apache.ignite.internal.managers.eventstorage.DiscoveryEventListener;
 import org.apache.ignite.internal.processors.GridProcessorAdapter;
 import org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion;
-import org.apache.ignite.internal.processors.cache.CacheGroupContext;
 import org.apache.ignite.internal.processors.cache.DynamicCacheChangeBatch;
 import org.apache.ignite.internal.processors.cache.DynamicCacheChangeRequest;
 import org.apache.ignite.internal.processors.cache.GridCacheContext;
@@ -267,11 +266,6 @@ public MvccProcessorImpl(GridKernalContext ctx) {
         ctx.discovery().setCustomEventListener(DynamicCacheChangeBatch.class, customLsnr);
     }
 
-    /** {@inheritDoc} */
-    @Override public boolean mvccEnabled() {
-        return mvccEnabled;
-    }
-
     /** {@inheritDoc} */
     @Override public void preProcessCacheConfiguration(CacheConfiguration ccfg) {
         if (ccfg.getAtomicityMode() == TRANSACTIONAL_SNAPSHOT) {
@@ -1183,12 +1177,8 @@ void stopVacuumWorkers() {
                 cleanupQueue = null;
             }
 
-            if (workers == null) {
-                if (log.isDebugEnabled() && mvccEnabled())
-                    log.debug("Attempting to stop inactive vacuum.");
-
+            if (workers == null)
                 return;
-            }
 
             assert queue != null;
 
@@ -1289,25 +1279,6 @@ else if (snapshot.cleanupVersion() <= MVCC_COUNTER_NA)
                                         }
                                     };
 
-                                for (CacheGroupContext grp : ctx.cache().cacheGroups()) {
-                                    if (grp.mvccEnabled()) {
-                                        grp.topology().readLock();
-
-                                        try {
-                                            for (GridDhtLocalPartition part : grp.topology().localPartitions()) {
-                                                VacuumTask task = new VacuumTask(snapshot, part);
-
-                                                cleanupQueue.offer(task);
-
-                                                res0.add(task);
-                                            }
-                                        }
-                                        finally {
-                                            grp.topology().readUnlock();
-                                        }
-                                    }
-                                }
-
                                 res0.markInitialized();
 
                                 res0.listen(() -> {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUtils.java
index 29ca654c5d26a..c9e75da265427 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUtils.java
@@ -742,14 +742,6 @@ private static GridNearTxLocal txStart(GridKernalContext ctx, @Nullable GridCach
         return tx;
     }
 
-    /**
-     * @param ctx Grid kernal context.
-     * @return Whether MVCC is enabled or not.
-     */
-    public static boolean mvccEnabled(GridKernalContext ctx) {
-        return ctx.coordinators().mvccEnabled();
-    }
-
     /**
      * Initialises MVCC filter and returns MVCC query tracker if needed.
      * @param cctx Cache context.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheOffheapManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheOffheapManager.java
index 43d69a62dbe2f..af8f92fb8a858 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheOffheapManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheOffheapManager.java
@@ -20,7 +20,6 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -1058,9 +1057,6 @@ private Metas getOrAllocateCacheMetas() throws IgniteCheckedException {
         if (partCntrs == null || partCntrs.isEmpty())
             return null;
 
-        if (grp.mvccEnabled()) // TODO IGNITE-7384
-            return super.historicalIterator(partCntrs, missing);
-
         GridCacheDatabaseSharedManager database = (GridCacheDatabaseSharedManager)grp.shared().database();
 
         Map<Integer, Long> partsCounters = new HashMap<>();
@@ -1215,7 +1211,7 @@ public void findAndCleanupLostIndexesForStoppedCache(int cacheId) throws IgniteC
                         grp.dataRegion().pageMemory(),
                         globalRemoveId(),
                         reuseListForIndex(name),
-                        grp.mvccEnabled()
+                        false
                     );
 
                     indexStorage.dropIndex(name);
@@ -2714,17 +2710,6 @@ private void checkGapsLinkAndPartMetaStorage(PagePartitionMetaIOV3 io, long page
             return null;
         }
 
-        /** {@inheritDoc} */
-        @Override public List<IgniteBiTuple<Object, MvccVersion>> mvccFindAllVersions(GridCacheContext cctx, KeyCacheObject key)
-            throws IgniteCheckedException {
-            CacheDataStore delegate = init0(true);
-
-            if (delegate != null)
-                return delegate.mvccFindAllVersions(cctx, key);
-
-            return Collections.emptyList();
-        }
-
         /** {@inheritDoc} */
         @Override public GridCursor<CacheDataRow> mvccAllVersionsCursor(GridCacheContext cctx,
             KeyCacheObject key, Object x) throws IgniteCheckedException {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxHandler.java
index e60dc5dcc37d8..f644c72e04ae7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxHandler.java
@@ -2288,7 +2288,7 @@ public void applyPartitionsUpdatesCounters(
                                     if (updated && rollback) {
                                         CacheGroupContext grpCtx = part.group();
 
-                                        if (grpCtx.persistenceEnabled() && grpCtx.walEnabled() && !grpCtx.mvccEnabled()) {
+                                        if (grpCtx.persistenceEnabled() && grpCtx.walEnabled()) {
                                             RollbackRecord rec =
                                                 new RollbackRecord(grpCtx.groupId(), part.id(), start, delta);
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxImplicitSingleStateImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxImplicitSingleStateImpl.java
index 113f582c24c4f..63f2c6bca14e1 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxImplicitSingleStateImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxImplicitSingleStateImpl.java
@@ -316,11 +316,6 @@ public class IgniteTxImplicitSingleStateImpl extends IgniteTxLocalStateAdapter {
         return entry != null ? entry.get(0) : null;
     }
 
-    /** MVCC Enabled */
-    public boolean mvccEnabled() {
-        return false;
-    }
-
     /** {@inheritDoc} */
     @Override public boolean useMvccCaching(int cacheId) {
         assert cacheCtx == null || cacheCtx.cacheId() == cacheId;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
index cd1483f93d902..324e47525a5ca 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
@@ -90,7 +90,6 @@
 import org.apache.ignite.internal.processors.cache.distributed.near.GridNearOptimisticTxPrepareFuture;
 import org.apache.ignite.internal.processors.cache.distributed.near.GridNearTxLocal;
 import org.apache.ignite.internal.processors.cache.mvcc.MvccCoordinator;
-import org.apache.ignite.internal.processors.cache.mvcc.msg.MvccRecoveryFinishedMessage;
 import org.apache.ignite.internal.processors.cache.mvcc.txlog.TxState;
 import org.apache.ignite.internal.processors.cache.persistence.wal.WALPointer;
 import org.apache.ignite.internal.processors.cache.transactions.TxDeadlockDetection.TxDeadlockFuture;
@@ -137,7 +136,6 @@
 import static org.apache.ignite.events.EventType.EVT_NODE_JOINED;
 import static org.apache.ignite.events.EventType.EVT_NODE_LEFT;
 import static org.apache.ignite.events.EventType.EVT_TX_STARTED;
-import static org.apache.ignite.internal.GridTopic.TOPIC_CACHE_COORDINATOR;
 import static org.apache.ignite.internal.GridTopic.TOPIC_TX;
 import static org.apache.ignite.internal.managers.communication.GridIoPolicy.SYSTEM_POOL;
 import static org.apache.ignite.internal.processors.cache.GridCacheOperation.READ;
@@ -3224,10 +3222,6 @@ private TxRecoveryInitRunnable(ClusterNode node, MvccCoordinator mvccCrd) {
                     log.debug("Processing node failed event [locNodeId=" + cctx.localNodeId() +
                         ", failedNodeId=" + evtNodeId + ']');
 
-                // Null means that recovery voting is not needed.
-                GridCompoundFuture<IgniteInternalTx, Void> allTxFinFut = isMvccRecoveryMessageRequired()
-                    ? new GridCompoundFuture<>() : null;
-
                 for (final IgniteInternalTx tx : activeTransactions()) {
                     if ((tx.near() && !tx.local() && tx.originatingNodeId().equals(evtNodeId))
                         || (tx.storeWriteThrough() && tx.masterNodeIds().contains(evtNodeId))) {
@@ -3257,11 +3251,6 @@ else if (tx.state() == MARKED_ROLLBACK || tx.setRollbackOnly())
                                     tx.rollbackAsync();
                             }
                         }
-
-                        // Await only mvcc transactions initiated by failed client node.
-                        if (allTxFinFut != null && tx.eventNodeId().equals(evtNodeId)
-                            && tx.mvccSnapshot() != null)
-                            allTxFinFut.add(tx.finishFuture());
                     }
                 }
 
@@ -3271,57 +3260,12 @@ else if (tx.state() == MARKED_ROLLBACK || tx.setRollbackOnly())
 
                 if (log.isInfoEnabled() && preparedTxCnt.get() > 0)
                     doneFut.listen(this::finishAndRecordTimings);
-
-                if (allTxFinFut == null)
-                    return;
-
-                allTxFinFut.markInitialized();
-
-                // Send vote to mvcc coordinator when all recovering transactions have finished.
-                allTxFinFut.listen(() -> {
-                    // If mvcc coordinator issued snapshot for recovering transaction has failed during recovery,
-                    // then there is no need to send messages to new coordinator.
-                    try {
-                        cctx.kernalContext().io().sendToGridTopic(
-                            mvccCrd.nodeId(),
-                            TOPIC_CACHE_COORDINATOR,
-                            new MvccRecoveryFinishedMessage(evtNodeId),
-                            SYSTEM_POOL);
-                    }
-                    catch (ClusterTopologyCheckedException e) {
-                        if (log.isInfoEnabled())
-                            log.info("Mvcc coordinator issued snapshots for recovering transactions " +
-                                "has left the cluster (will ignore) [locNodeId=" + cctx.localNodeId() +
-                                    ", failedNodeId=" + evtNodeId +
-                                    ", mvccCrdNodeId=" + mvccCrd.nodeId() + ']');
-                    }
-                    catch (IgniteCheckedException e) {
-                        log.warning("Failed to notify mvcc coordinator that all recovering transactions were " +
-                            "finished [locNodeId=" + cctx.localNodeId() +
-                            ", failedNodeId=" + evtNodeId +
-                            ", mvccCrdNodeId=" + mvccCrd.nodeId() + ']', e);
-                    }
-                });
             }
             finally {
                 cctx.kernalContext().gateway().readUnlock();
             }
         }
 
-        /**
-         * Determines need to send a recovery message or not.
-         *
-         * @return True if message required, false otherwise.
-         */
-        private boolean isMvccRecoveryMessageRequired() {
-            ClusterNode mvccCrdNode = null;
-
-            if (mvccCrd != null && mvccCrd.nodeId() != null)
-                mvccCrdNode = cctx.node(mvccCrd.nodeId());
-
-            return node.isClient() && mvccCrdNode != null && cctx.kernalContext().coordinators().mvccEnabled();
-        }
-
         /**
          * @param tx Tx.
          * @param failedNode Failed node.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxRemoteStateAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxRemoteStateAdapter.java
index da8a8dcb8242e..d29da192ca1ab 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxRemoteStateAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxRemoteStateAdapter.java
@@ -130,11 +130,6 @@ public abstract class IgniteTxRemoteStateAdapter implements IgniteTxRemoteState
         assert false;
     }
 
-    /** MVCC Enabled */
-    public boolean mvccEnabled() {
-        return mvccEnabled;
-    }
-
     /** {@inheritDoc} */
     @Override public boolean useMvccCaching(int cacheId) {
         return mvccCachingCacheIds.contains(cacheId);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxStateImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxStateImpl.java
index 68422a5aaf0f1..310193a8cc7e5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxStateImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxStateImpl.java
@@ -482,11 +482,6 @@ public synchronized Collection<IgniteTxEntry> allEntriesCopy() {
         return writeView != null && writeView.size() == 1 ? F.firstValue(writeView) : null;
     }
 
-    /** MVCC Enabled */
-    public boolean mvccEnabled() {
-        return Boolean.TRUE == mvccEnabled;
-    }
-
     /** {@inheritDoc} */
     @Override public boolean useMvccCaching(int cacheId) {
         return mvccCachingCacheIds.contains(cacheId);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/CacheDataTree.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/CacheDataTree.java
index 65887df7fc857..9e0029cc9ffa1 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/CacheDataTree.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/CacheDataTree.java
@@ -24,7 +24,6 @@
 import org.apache.ignite.internal.processors.cache.CacheGroupContext;
 import org.apache.ignite.internal.processors.cache.GridCacheSharedContext;
 import org.apache.ignite.internal.processors.cache.KeyCacheObject;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUtils;
 import org.apache.ignite.internal.processors.cache.persistence.CacheDataRow;
 import org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter;
 import org.apache.ignite.internal.processors.cache.persistence.CacheSearchRow;
@@ -38,11 +37,6 @@
 import org.apache.ignite.internal.processors.cache.persistence.tree.io.IOVersions;
 import org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO;
 import org.apache.ignite.internal.processors.cache.persistence.tree.reuse.ReuseList;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccCacheIdAwareDataInnerIO;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccCacheIdAwareDataLeafIO;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccDataInnerIO;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccDataLeafIO;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccDataRow;
 import org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccDataPageClosure;
 import org.apache.ignite.internal.util.GridUnsafe;
 import org.apache.ignite.internal.util.lang.GridCursor;
@@ -53,7 +47,6 @@
 import static java.lang.Boolean.TRUE;
 import static org.apache.ignite.internal.pagemem.PageIdUtils.itemId;
 import static org.apache.ignite.internal.pagemem.PageIdUtils.pageId;
-import static org.apache.ignite.internal.processors.cache.persistence.tree.io.DataPageIO.MVCC_INFO_SIZE;
 import static org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO.T_DATA;
 import static org.apache.ignite.internal.util.GridArrays.clearTail;
 
@@ -187,7 +180,6 @@ private GridCursor<CacheDataRow> scanDataPages(CacheDataRowAdapter.RowData rowDa
         GridCacheSharedContext shared = grp.shared();
         GridCacheDatabaseSharedManager db = (GridCacheDatabaseSharedManager)shared.database();
         PageStore pageStore = db.getPageStore(grpId, partId);
-        boolean mvccEnabled = grp.mvccEnabled();
         int pageSize = pageSize();
 
         long startPageId = ((PageMemoryEx)pageMem).partitionMetaPageId(grp.groupId(), partId);
@@ -267,7 +259,7 @@ private boolean readNextDataPage() throws IgniteCheckedException {
 
                             for (int i = 0; i < rowsCnt; i++) {
                                 if (c == null || c.applyMvcc(io, pageAddr, i, pageSize)) {
-                                    DataRow row = mvccEnabled ? new MvccDataRow() : new DataRow();
+                                    DataRow row = new DataRow();
 
                                     row.initFromDataPage(
                                         io,
@@ -323,9 +315,6 @@ private static CacheDataRowAdapter.RowData asRowData(Object flags) {
      * @return Tree inner IO.
      */
     private static IOVersions<? extends AbstractDataInnerIO> innerIO(CacheGroupContext grp) {
-        if (grp.mvccEnabled())
-            return grp.sharedGroup() ? MvccCacheIdAwareDataInnerIO.VERSIONS : MvccDataInnerIO.VERSIONS;
-
         return grp.sharedGroup() ? CacheIdAwareDataInnerIO.VERSIONS : DataInnerIO.VERSIONS;
     }
 
@@ -334,9 +323,6 @@ private static IOVersions<? extends AbstractDataInnerIO> innerIO(CacheGroupConte
      * @return Tree leaf IO.
      */
     private static IOVersions<? extends AbstractDataLeafIO> leafIO(CacheGroupContext grp) {
-        if (grp.mvccEnabled())
-            return grp.sharedGroup() ? MvccCacheIdAwareDataLeafIO.VERSIONS : MvccDataLeafIO.VERSIONS;
-
         return grp.sharedGroup() ? CacheIdAwareDataLeafIO.VERSIONS : DataLeafIO.VERSIONS;
     }
 
@@ -350,9 +336,6 @@ public CacheDataRowStore rowStore() {
     /** {@inheritDoc} */
     @Override protected int compare(BPlusIO<CacheSearchRow> iox, long pageAddr, int idx, CacheSearchRow row)
         throws IgniteCheckedException {
-        assert !grp.mvccEnabled() || row.mvccCoordinatorVersion() != MvccUtils.MVCC_CRD_COUNTER_NA
-            || (row.getClass() == SearchRow.class && row.key() == null) : row;
-
         RowLinkIO io = (RowLinkIO)iox;
 
         int cmp;
@@ -390,16 +373,7 @@ public CacheDataRowStore rowStore() {
 
         cmp = compareKeys(row.key(), link);
 
-        if (cmp != 0 || !grp.mvccEnabled())
-            return cmp;
-
-        long crd = io.getMvccCoordinatorVersion(pageAddr, idx);
-        long cntr = io.getMvccCounter(pageAddr, idx);
-        int opCntr = io.getMvccOperationCounter(pageAddr, idx);
-
-        assert MvccUtils.mvccVersionIsValid(crd, cntr, opCntr);
-
-        return -MvccUtils.compare(crd, cntr, opCntr, row); // descending order
+        return cmp;
     }
 
     /** {@inheritDoc} */
@@ -413,15 +387,7 @@ public CacheDataRowStore rowStore() {
 
         CacheDataRowAdapter.RowData x = asRowData(flags);
 
-        if (grp.mvccEnabled()) {
-            long mvccCrdVer = rowIo.getMvccCoordinatorVersion(pageAddr, idx);
-            long mvccCntr = rowIo.getMvccCounter(pageAddr, idx);
-            int mvccOpCntr = rowIo.getMvccOperationCounter(pageAddr, idx);
-
-            return rowStore.mvccRow(cacheId, hash, link, x, mvccCrdVer, mvccCntr, mvccOpCntr);
-        }
-        else
-            return rowStore.dataRow(cacheId, hash, link, x);
+        return rowStore.dataRow(cacheId, hash, link, x);
     }
 
     /** {@inheritDoc} */
@@ -456,9 +422,6 @@ private int compareKeys(KeyCacheObject key, final long link) throws IgniteChecke
                 if (data.nextLink() == 0) {
                     long addr = pageAddr + data.offset();
 
-                    if (grp.mvccEnabled())
-                        addr += MVCC_INFO_SIZE; // Skip MVCC info.
-
                     if (grp.storeCacheIdInDataPage())
                         addr += 4; // Skip cache id.
 
@@ -504,8 +467,7 @@ private int compareKeys(KeyCacheObject key, final long link) throws IgniteChecke
             releasePage(pageId, page);
         }
 
-        // TODO GG-11768.
-        CacheDataRowAdapter other = grp.mvccEnabled() ? new MvccDataRow(link) : new CacheDataRowAdapter(link);
+        CacheDataRowAdapter other = new CacheDataRowAdapter(link);
         other.initFromLink(grp, CacheDataRowAdapter.RowData.KEY_ONLY);
 
         byte[] bytes1 = other.key().valueBytes(grp.cacheObjectContext());
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/PendingRow.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/PendingRow.java
index 4116ae0b21957..1a6a1837c1bff 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/PendingRow.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/PendingRow.java
@@ -21,7 +21,6 @@
 import org.apache.ignite.internal.processors.cache.CacheGroupContext;
 import org.apache.ignite.internal.processors.cache.KeyCacheObject;
 import org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter;
-import org.apache.ignite.internal.processors.cache.tree.mvcc.data.MvccDataRow;
 import org.apache.ignite.internal.util.typedef.internal.S;
 
 /**
@@ -69,7 +68,7 @@ public PendingRow(int cacheId, long expireTime, long link) {
      * @throws IgniteCheckedException If failed.
      */
     PendingRow initKey(CacheGroupContext grp) throws IgniteCheckedException {
-        CacheDataRowAdapter rowData = grp.mvccEnabled() ? new MvccDataRow(link) : new CacheDataRowAdapter(link);
+        CacheDataRowAdapter rowData = new CacheDataRowAdapter(link);
         rowData.initFromLink(grp, CacheDataRowAdapter.RowData.KEY_ONLY);
 
         key = rowData.key();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcRequestHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcRequestHandler.java
index f0be798624cb0..5c5034b7f9bf8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcRequestHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcRequestHandler.java
@@ -32,7 +32,6 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 import javax.cache.configuration.Factory;
-import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteLogger;
 import org.apache.ignite.cache.query.BulkLoadContextCursor;
 import org.apache.ignite.cache.query.FieldsQueryCursor;
@@ -53,7 +52,6 @@
 import org.apache.ignite.internal.processors.cache.GridCacheContext;
 import org.apache.ignite.internal.processors.cache.QueryCursorImpl;
 import org.apache.ignite.internal.processors.cache.binary.CacheObjectBinaryProcessorImpl;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUtils;
 import org.apache.ignite.internal.processors.cache.query.IgniteQueryErrorCode;
 import org.apache.ignite.internal.processors.cache.query.QueryCursorEx;
 import org.apache.ignite.internal.processors.cache.query.SqlFieldsQueryEx;
@@ -71,7 +69,6 @@
 import org.apache.ignite.internal.processors.query.SqlClientContext;
 import org.apache.ignite.internal.sql.optimizer.affinity.PartitionResult;
 import org.apache.ignite.internal.util.GridSpinBusyLock;
-import org.apache.ignite.internal.util.future.GridFutureAdapter;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.X;
 import org.apache.ignite.internal.util.typedef.internal.S;
@@ -240,25 +237,12 @@ public JdbcRequestHandler(
     }
 
     /** {@inheritDoc} */
-    @Override public ClientListenerResponse handle(ClientListenerRequest req0) {
-        assert req0 != null;
+    @Override public ClientListenerResponse handle(ClientListenerRequest req) {
+        assert req != null;
 
-        assert req0 instanceof JdbcRequest;
+        assert req instanceof JdbcRequest;
 
-        JdbcRequest req = (JdbcRequest)req0;
-
-        if (!MvccUtils.mvccEnabled(connCtx.kernalContext()))
-            return doHandle(req);
-        else {
-            GridFutureAdapter<ClientListenerResponse> fut = worker.process(req);
-
-            try {
-                return fut.get();
-            }
-            catch (IgniteCheckedException e) {
-                return exceptionToResult(e);
-            }
-        }
+        return doHandle((JdbcRequest)req);
     }
 
     /** {@inheritDoc} */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcRequestHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcRequestHandler.java
index 5415395ff7cf1..eb84a170c6222 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcRequestHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcRequestHandler.java
@@ -28,8 +28,6 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
 import javax.cache.configuration.Factory;
-
-import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteException;
 import org.apache.ignite.IgniteLogger;
 import org.apache.ignite.cache.query.FieldsQueryCursor;
@@ -38,7 +36,6 @@
 import org.apache.ignite.internal.IgniteInterruptedCheckedException;
 import org.apache.ignite.internal.binary.BinaryWriterExImpl;
 import org.apache.ignite.internal.binary.GridBinaryMarshaller;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUtils;
 import org.apache.ignite.internal.processors.cache.query.IgniteQueryErrorCode;
 import org.apache.ignite.internal.processors.cache.query.SqlFieldsQueryEx;
 import org.apache.ignite.internal.processors.odbc.ClientListenerProtocolVersion;
@@ -57,7 +54,6 @@
 import org.apache.ignite.internal.processors.query.QueryUtils;
 import org.apache.ignite.internal.processors.query.SqlClientContext;
 import org.apache.ignite.internal.util.GridSpinBusyLock;
-import org.apache.ignite.internal.util.future.GridFutureAdapter;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.X;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -191,25 +187,12 @@ public OdbcRequestHandler(
     }
 
     /** {@inheritDoc} */
-    @Override public ClientListenerResponse handle(ClientListenerRequest req0) {
-        assert req0 != null;
-
-        assert req0 instanceof OdbcRequest;
+    @Override public ClientListenerResponse handle(ClientListenerRequest req) {
+        assert req != null;
 
-        OdbcRequest req = (OdbcRequest)req0;
-
-        if (!MvccUtils.mvccEnabled(ctx))
-            return doHandle(req);
-        else {
-            GridFutureAdapter<ClientListenerResponse> fut = worker.process(req);
+        assert req instanceof OdbcRequest;
 
-            try {
-                return fut.get();
-            }
-            catch (IgniteCheckedException e) {
-                return exceptionToResult(e);
-            }
-        }
+        return doHandle((OdbcRequest)req);
     }
 
     /**
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridExchangeFreeSwitchTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridExchangeFreeSwitchTest.java
index dedd7b402b79e..efaadd7c98bf8 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridExchangeFreeSwitchTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridExchangeFreeSwitchTest.java
@@ -45,7 +45,6 @@
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsFullMessage;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsSingleMessage;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccProcessor;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
 import org.apache.ignite.internal.util.typedef.G;
 import org.apache.ignite.lang.IgniteBiInClosure;
@@ -367,21 +366,9 @@ private void testNoTransactionsWaitAtNodeLeft(int backups, PartitionLossPolicy l
 
             Random r = new Random();
 
-            Ignite candidate;
-            MvccProcessor proc;
+            int nodeToStop = r.nextInt(nodes);
 
-            int nodeToStop;
-
-            do {
-                nodeToStop = r.nextInt(nodes);
-                candidate = grid(nodeToStop);
-
-                proc = ((IgniteEx)candidate).context().coordinators();
-            }
-            // MVCC coordinator fail always breaks transactions, excluding.
-            while (proc.mvccEnabled() && proc.currentCoordinator().local());
-
-            Ignite failed = candidate;
+            Ignite failed = grid(nodeToStop);
 
             int multiplicator = 3;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/memtracker/PageMemoryTracker.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/memtracker/PageMemoryTracker.java
index 9bd4f0eaae165..dcd44136b7fa4 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/memtracker/PageMemoryTracker.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/memtracker/PageMemoryTracker.java
@@ -52,7 +52,6 @@
 import org.apache.ignite.internal.processors.cache.CacheGroupContext;
 import org.apache.ignite.internal.processors.cache.GridCacheProcessor;
 import org.apache.ignite.internal.processors.cache.GridCacheSharedContext;
-import org.apache.ignite.internal.processors.cache.mvcc.MvccUtils;
 import org.apache.ignite.internal.processors.cache.mvcc.txlog.TxLog;
 import org.apache.ignite.internal.processors.cache.persistence.DataRegion;
 import org.apache.ignite.internal.processors.cache.persistence.DataRegionMetricsImpl;
@@ -65,7 +64,6 @@
 import org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO;
 import org.apache.ignite.internal.processors.cache.persistence.wal.FileWriteAheadLogManager;
 import org.apache.ignite.internal.processors.cache.persistence.wal.WALPointer;
-import org.apache.ignite.internal.processors.cache.tree.AbstractDataLeafIO;
 import org.apache.ignite.internal.util.GridUnsafe;
 import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -75,8 +73,6 @@
 import org.apache.ignite.spi.encryption.EncryptionSpi;
 import org.mockito.Mockito;
 
-import static org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO.T_CACHE_ID_DATA_REF_MVCC_LEAF;
-import static org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO.T_DATA_REF_MVCC_LEAF;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
@@ -542,9 +538,6 @@ private long pageStoreAllocatedPages() {
 
         long totalAllocated = pageStoreMgr.pagesAllocated(MetaStorage.METASTORAGE_CACHE_ID);
 
-        if (MvccUtils.mvccEnabled(gridCtx))
-            totalAllocated += pageStoreMgr.pagesAllocated(TxLog.TX_LOG_CACHE_ID);
-
         for (CacheGroupContext ctx : gridCtx.cache().cacheGroups())
             totalAllocated += pageStoreMgr.pagesAllocated(ctx.groupId());
 
@@ -685,20 +678,6 @@ private boolean comparePages(FullPageId fullPageId, DirectMemoryPage expPage, lo
 
         PageIO pageIo = PageIO.getPageIO(actualPageAddr);
 
-        if (pageIo.getType() == T_DATA_REF_MVCC_LEAF || pageIo.getType() == T_CACHE_ID_DATA_REF_MVCC_LEAF) {
-            assert cacheProc.cacheGroup(fullPageId.groupId()).mvccEnabled();
-
-            AbstractDataLeafIO io = (AbstractDataLeafIO)pageIo;
-
-            int cnt = io.getMaxCount(actualPageAddr, pageSize);
-
-            // Reset lock info as there is no sense to log it into WAL.
-            for (int i = 0; i < cnt; i++) {
-                io.setMvccLockCoordinatorVersion(expPageAddr, i, io.getMvccLockCoordinatorVersion(actualPageAddr, i));
-                io.setMvccLockCounter(expPageAddr, i, io.getMvccLockCounter(actualPageAddr, i));
-            }
-        }
-
         // Compare only meaningful data.
         if (pageIo instanceof CompactablePageIO) {
             tmpBuf1.clear();
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/CommandProcessor.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/CommandProcessor.java
index e38942543304b..17d6c40126ea6 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/CommandProcessor.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/CommandProcessor.java
@@ -43,11 +43,9 @@
 import org.apache.ignite.internal.processors.bulkload.BulkLoadProcessor;
 import org.apache.ignite.internal.processors.bulkload.BulkLoadStreamerWriter;
 import org.apache.ignite.internal.processors.cache.GridCacheContext;
-import org.apache.ignite.internal.processors.cache.distributed.near.GridNearTxLocal;
 import org.apache.ignite.internal.processors.cache.query.IgniteQueryErrorCode;
 import org.apache.ignite.internal.processors.query.GridQueryTypeDescriptor;
 import org.apache.ignite.internal.processors.query.IgniteSQLException;
-import org.apache.ignite.internal.processors.query.NestedTxMode;
 import org.apache.ignite.internal.processors.query.QueryEntityEx;
 import org.apache.ignite.internal.processors.query.QueryField;
 import org.apache.ignite.internal.processors.query.QueryUtils;
@@ -90,12 +88,8 @@
 import org.h2.table.Column;
 import org.h2.value.DataType;
 import org.h2.value.Value;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.mvccEnabled;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.tx;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.txStart;
 import static org.apache.ignite.internal.processors.query.QueryUtils.convert;
 import static org.apache.ignite.internal.processors.query.QueryUtils.isDdlOnSchemaSupported;
 import static org.apache.ignite.internal.processors.query.h2.sql.GridSqlQueryParser.PARAM_WRAP_VALUE;
@@ -193,8 +187,6 @@ public FieldsQueryCursor<List<?>> runNativeCommand(String sql, SqlCommand cmdNat
             return processBulkLoadCommand((SqlBulkLoadCommand)cmdNative, qryId);
         else if (cmdNative instanceof SqlSetStreamingCommand)
             processSetStreamingCommand((SqlSetStreamingCommand)cmdNative, cliCtx);
-        else
-            processTxCommand(cmdNative, params);
 
         return null;
     }
@@ -615,108 +607,6 @@ private static String getTypeClassName(GridSqlColumn col) {
         }
     }
 
-    /**
-     * Process transactional command.
-     * @param cmd Command.
-     * @param params Parameters.
-     * @throws IgniteCheckedException if failed.
-     */
-    private void processTxCommand(SqlCommand cmd, QueryParameters params)
-        throws IgniteCheckedException {
-        NestedTxMode nestedTxMode = params.nestedTxMode();
-
-        GridNearTxLocal tx = tx(ctx);
-
-        if (cmd instanceof SqlBeginTransactionCommand) {
-            if (!mvccEnabled(ctx))
-                throw new IgniteSQLException("MVCC must be enabled in order to start transaction.",
-                    IgniteQueryErrorCode.MVCC_DISABLED);
-
-            if (tx != null) {
-                if (nestedTxMode == null)
-                    nestedTxMode = NestedTxMode.DEFAULT;
-
-                switch (nestedTxMode) {
-                    case COMMIT:
-                        doCommit(tx);
-
-                        txStart(ctx, params.timeout());
-
-                        break;
-
-                    case IGNORE:
-                        log.warning("Transaction has already been started, ignoring BEGIN command.");
-
-                        break;
-
-                    case ERROR:
-                        throw new IgniteSQLException("Transaction has already been started.",
-                            IgniteQueryErrorCode.TRANSACTION_EXISTS);
-
-                    default:
-                        throw new IgniteSQLException("Unexpected nested transaction handling mode: " +
-                            nestedTxMode.name());
-                }
-            }
-            else
-                txStart(ctx, params.timeout());
-        }
-        else if (cmd instanceof SqlCommitTransactionCommand) {
-            // Do nothing if there's no transaction.
-            if (tx != null)
-                doCommit(tx);
-        }
-        else {
-            assert cmd instanceof SqlRollbackTransactionCommand;
-
-            // Do nothing if there's no transaction.
-            if (tx != null)
-                doRollback(tx);
-        }
-    }
-
-    /**
-     * Commit and properly close transaction.
-     * @param tx Transaction.
-     * @throws IgniteCheckedException if failed.
-     */
-    private void doCommit(@NotNull GridNearTxLocal tx) throws IgniteCheckedException {
-        try {
-            tx.commit();
-        }
-        finally {
-            closeTx(tx);
-        }
-    }
-
-    /**
-     * Rollback and properly close transaction.
-     * @param tx Transaction.
-     * @throws IgniteCheckedException if failed.
-     */
-    public void doRollback(@NotNull GridNearTxLocal tx) throws IgniteCheckedException {
-        try {
-            tx.rollback();
-        }
-        finally {
-            closeTx(tx);
-        }
-    }
-
-    /**
-     * Properly close transaction.
-     * @param tx Transaction.
-     * @throws IgniteCheckedException if failed.
-     */
-    private void closeTx(@NotNull GridNearTxLocal tx) throws IgniteCheckedException {
-        try {
-            tx.close();
-        }
-        finally {
-            ctx.cache().context().tm().resetContext();
-        }
-    }
-
     /**
      * Process SET STREAMING command.
      *
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/GridCacheTwoStepQuery.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/GridCacheTwoStepQuery.java
index 842972d6590e5..aad80a1b66d64 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/GridCacheTwoStepQuery.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/GridCacheTwoStepQuery.java
@@ -225,13 +225,6 @@ public Set<QueryTable> tables() {
         return tbls;
     }
 
-    /**
-     * @return Mvcc flag.
-     */
-    public boolean mvccEnabled() {
-        return mvccEnabled;
-    }
-
     /**
      * @return Number of parameters
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/IgniteH2Indexing.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/IgniteH2Indexing.java
index 681f019b843e3..bbb088cc0917b 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/IgniteH2Indexing.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/IgniteH2Indexing.java
@@ -159,8 +159,6 @@
 import static java.lang.Math.min;
 import static java.util.Collections.singletonList;
 import static org.apache.ignite.events.EventType.EVT_SQL_QUERY_EXECUTION;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.checkActive;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.mvccEnabled;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.requestSnapshot;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.tx;
 import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.txStart;
@@ -411,8 +409,6 @@ private GridQueryFieldsResult executeSelectLocal(
         boolean inTx,
         int timeout
     ) {
-        assert !select.mvccEnabled() || mvccTracker != null;
-
         String qry;
 
         if (select.forUpdate())
@@ -1121,7 +1117,7 @@ private List<? extends FieldsQueryCursor<List<?>>> executeDml(
         Exception failReason = null;
 
         try (TraceSurroundings ignored = MTC.support(ctx.tracing().create(SQL_DML_QRY_EXECUTE, MTC.span()))) {
-            if (!dml.mvccEnabled() && !updateInTxAllowed && ctx.cache().context().tm().inUserTx()) {
+            if (!updateInTxAllowed && ctx.cache().context().tm().inUserTx()) {
                 throw new IgniteSQLException("DML statements are not allowed inside a transaction over " +
                     "cache(s) with TRANSACTIONAL atomicity mode (change atomicity mode to " +
                     "TRANSACTIONAL_SNAPSHOT or disable this error message with system property " +
@@ -1211,28 +1207,6 @@ private List<? extends FieldsQueryCursor<List<?>>> executeSelect(
 
             boolean inTx = false;
 
-            if (select.mvccEnabled()) {
-                mvccCctx = ctx.cache().context().cacheContext(select.mvccCacheId());
-
-                if (mvccCctx == null)
-                    throw new IgniteCheckedException("Cache has been stopped concurrently [cacheId=" +
-                        select.mvccCacheId() + ']');
-
-                boolean autoStartTx = !qryParams.autoCommit() && tx(ctx) == null;
-
-                // Start new user tx in case of autocommit == false.
-                if (autoStartTx)
-                    txStart(ctx, qryParams.timeout());
-
-                tx = tx(ctx);
-
-                checkActive(tx);
-
-                inTx = tx != null;
-
-                tracker = MvccUtils.mvccTracker(mvccCctx, tx);
-            }
-
             int timeout = operationTimeout(qryParams.timeout(), tx);
 
             Iterable<List<?>> iter = executeSelect0(
@@ -1345,8 +1319,6 @@ private Iterable<List<?>> executeSelect0(
         boolean inTx,
         int timeout
     ) {
-        assert !select.mvccEnabled() || mvccTracker != null;
-
         // Check security.
         if (ctx.security().enabled())
             checkSecurity(select.cacheIds());
@@ -1687,9 +1659,6 @@ private Iterable<List<?>> executeSelectDistributed(
             };
         }
         else {
-            assert !twoStepQry.mvccEnabled() || !F.isEmpty(twoStepQry.cacheIds());
-            assert twoStepQry.mvccEnabled() == (mvccTracker != null);
-
             iter = new Iterable<List<?>>() {
                 @Override public Iterator<List<?>> iterator() {
                     try (TraceSurroundings ignored = MTC.support(ctx.tracing().create(SQL_ITER_OPEN, MTC.span()))) {
@@ -2075,14 +2044,8 @@ private JavaObjectSerializer h2Serializer() {
     }
 
     /** {@inheritDoc} */
-    @Override public void onClientDisconnect() throws IgniteCheckedException {
-        if (!mvccEnabled(ctx))
-            return;
-
-        GridNearTxLocal tx = tx(ctx);
-
-        if (tx != null)
-            cmdProc.doRollback(tx);
+    @Override public void onClientDisconnect() {
+        // No-op.
     }
 
     /** {@inheritDoc} */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultDml.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultDml.java
index 79ebfe2c542e8..9d5626db29632 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultDml.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultDml.java
@@ -65,13 +65,6 @@ public GridSqlStatement statement() {
         return stmt;
     }
 
-    /**
-     * @return MVCC enabled.
-     */
-    public boolean mvccEnabled() {
-        return mvccEnabled;
-    }
-
     /**
      * @return Streamer table.
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultSelect.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultSelect.java
index 418dc331e3755..8c6c5ff4d62d9 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultSelect.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParserResultSelect.java
@@ -146,13 +146,6 @@ public Integer mvccCacheId() {
         return mvccCacheId;
     }
 
-    /**
-     * @return Whether this is a SELECT for MVCC caches.
-     */
-    public boolean mvccEnabled() {
-        return mvccCacheId != null;
-    }
-
     /**
      * @return Whether this is FOR UPDATE query.
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/GridReduceQueryExecutor.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/GridReduceQueryExecutor.java
index 125771e865bb3..57736d6580e26 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/GridReduceQueryExecutor.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/GridReduceQueryExecutor.java
@@ -80,7 +80,6 @@
 import org.apache.ignite.internal.processors.query.h2.twostep.msg.GridH2QueryRequest;
 import org.apache.ignite.internal.processors.tracing.MTC;
 import org.apache.ignite.internal.processors.tracing.MTC.TraceSurroundings;
-import org.apache.ignite.internal.transactions.IgniteTxAlreadyCompletedCheckedException;
 import org.apache.ignite.internal.util.typedef.C2;
 import org.apache.ignite.internal.util.typedef.CIX2;
 import org.apache.ignite.internal.util.typedef.F;
@@ -88,7 +87,6 @@
 import org.apache.ignite.lang.IgniteBiClosure;
 import org.apache.ignite.lang.IgniteFuture;
 import org.apache.ignite.plugin.extensions.communication.Message;
-import org.apache.ignite.transactions.TransactionAlreadyCompletedException;
 import org.apache.ignite.transactions.TransactionException;
 import org.h2.command.ddl.CreateTableData;
 import org.h2.engine.Session;
@@ -102,8 +100,6 @@
 import static java.util.Collections.singletonList;
 import static java.util.Collections.singletonMap;
 import static org.apache.ignite.IgniteSystemProperties.IGNITE_SQL_RETRY_TIMEOUT;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.checkActive;
-import static org.apache.ignite.internal.processors.cache.mvcc.MvccUtils.tx;
 import static org.apache.ignite.internal.processors.cache.query.GridCacheSqlQuery.EMPTY_PARAMS;
 import static org.apache.ignite.internal.processors.query.h2.sql.GridSqlQuerySplitter.mergeTableIdentifier;
 import static org.apache.ignite.internal.processors.tracing.SpanTags.ERROR;
@@ -359,8 +355,6 @@ public Iterator<List<?>> query(
         Boolean dataPageScanEnabled,
         int pageSize
     ) {
-        assert !qry.mvccEnabled() || mvccTracker != null;
-
         if (pageSize <= 0)
             pageSize = Query.DFLT_PAGE_SIZE;
 
@@ -372,14 +366,6 @@ public Iterator<List<?>> query(
         if (parts != null && qry.isReplicatedOnly())
             throw new CacheException("Partitions are not supported for replicated caches");
 
-        try {
-            if (qry.mvccEnabled())
-                checkActive(tx(ctx));
-        }
-        catch (IgniteTxAlreadyCompletedCheckedException e) {
-            throw new TransactionAlreadyCompletedException(e.getMessage(), e);
-        }
-
         final boolean singlePartMode = parts != null && parts.length == 1;
 
         if (F.isEmpty(params))
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/SqlTransactionCommandsSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/SqlTransactionCommandsSelfTest.java
deleted file mode 100644
index 83c213b99dee3..0000000000000
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/SqlTransactionCommandsSelfTest.java
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.ignite.internal.processors.cache.index;
-
-import java.util.concurrent.Callable;
-import org.apache.ignite.internal.processors.query.IgniteSQLException;
-import org.apache.ignite.testframework.GridTestUtils;
-import org.junit.Test;
-
-/**
- *
- */
-public class SqlTransactionCommandsSelfTest extends AbstractSchemaSelfTest {
-    /** {@inheritDoc} */
-    @Override protected void beforeTestsStarted() throws Exception {
-        super.beforeTestsStarted();
-
-        startGrid(commonConfiguration(0));
-
-        super.execute(grid(0), "CREATE TABLE INTS(k int primary key, v int) WITH \"wrap_value=false,cache_name=ints," +
-            "atomicity=transactional\"");
-    }
-
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testBeginWithMvccDisabled() throws Exception {
-        GridTestUtils.assertThrows(null, new Callable<Object>() {
-            @Override public Object call() throws Exception {
-                execute(grid(0), "BEGIN");
-
-                return null;
-            }
-        }, IgniteSQLException.class, "MVCC must be enabled in order to start transaction.");
-    }
-
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testCommitWithMvccDisabled() throws Exception {
-        execute(grid(0), "COMMIT");
-        // assert no exception
-    }
-
-    /**
-     * @throws Exception if failed.
-     */
-    @Test
-    public void testRollbackWithMvccDisabled() throws Exception {
-        execute(grid(0), "ROLLBACK");
-        // assert no exception
-    }
-}
diff --git a/modules/indexing/src/test/java/org/apache/ignite/testsuites/IgniteBinaryCacheQueryTestSuite3.java b/modules/indexing/src/test/java/org/apache/ignite/testsuites/IgniteBinaryCacheQueryTestSuite3.java
index 4805bf92d01b3..219ecc25cf3a6 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/testsuites/IgniteBinaryCacheQueryTestSuite3.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/testsuites/IgniteBinaryCacheQueryTestSuite3.java
@@ -95,7 +95,6 @@
 import org.apache.ignite.internal.processors.cache.index.OptimizedMarshallerIndexNameTest;
 import org.apache.ignite.internal.processors.cache.index.PojoIndexLocalQueryTest;
 import org.apache.ignite.internal.processors.cache.index.SqlPartitionEvictionTest;
-import org.apache.ignite.internal.processors.cache.index.SqlTransactionCommandsSelfTest;
 import org.apache.ignite.internal.processors.cache.metric.SqlViewExporterSpiTest;
 import org.apache.ignite.internal.processors.cache.query.IgniteCacheQueryCacheDestroySelfTest;
 import org.apache.ignite.internal.processors.cache.query.ScanQueryConcurrentSqlUpdatesTest;
@@ -267,8 +266,6 @@
     GridIndexRebuildTest.class,
     CheckIndexesInlineSizeOnNodeJoinMultiJvmTest.class,
 
-    SqlTransactionCommandsSelfTest.class,
-
     IgniteSqlDefaultValueTest.class,
     IgniteDecimalSelfTest.class,
     IgniteSQLColumnConstraintsTest.class,