diff --git a/core/src/main/scala/zio/nebula/package.scala b/core/src/main/scala/zio/nebula/package.scala
index 479bbd2..d2e28fb 100644
--- a/core/src/main/scala/zio/nebula/package.scala
+++ b/core/src/main/scala/zio/nebula/package.scala
@@ -12,7 +12,7 @@ import zio.nebula.storage._
 package object nebula {
 
   type SessionClient = NebulaSessionClient
-  type Client        = NebulaClient with NebulaSessionPoolConfig with NebulaPoolConfig
+  type Client        = NebulaClient with NebulaPoolConfig
   type Storage       = NebulaStorageClient
   type Meta          = NebulaMetaClient
 
diff --git a/core/src/test/scala/zio/nebula/NebulaSpec.scala b/core/src/test/scala/zio/nebula/NebulaSpec.scala
index c9ea485..dc62c37 100644
--- a/core/src/test/scala/zio/nebula/NebulaSpec.scala
+++ b/core/src/test/scala/zio/nebula/NebulaSpec.scala
@@ -22,12 +22,12 @@ trait NebulaSpec extends ZIOSpecDefault {
     (specLayered @@ beforeAll(
       ZIO.serviceWithZIO[NebulaClient](_.init())
         *> ZIO.serviceWithZIO[NebulaClient](
-          _.openSession().flatMap(_.execute(Stmt.str("""
-                                                       |CREATE SPACE IF NOT EXISTS test(vid_type=fixed_string(20));
-                                                       |USE test;
-                                                       |CREATE TAG IF NOT EXISTS person(name string, age int);
-                                                       |CREATE EDGE IF NOT EXISTS like(likeness double)
-                                                       |""".stripMargin)))
+          _.openSession(false).flatMap(_.execute(Stmt.str("""
+                                                            |CREATE SPACE IF NOT EXISTS test(vid_type=fixed_string(20));
+                                                            |USE test;
+                                                            |CREATE TAG IF NOT EXISTS person(name string, age int);
+                                                            |CREATE EDGE IF NOT EXISTS like(likeness double)
+                                                            |""".stripMargin)))
         )
     ) @@ sequential @@ eventually)
       .provideShared(
diff --git a/core/src/test/scala/zio/nebula/ZioNebulaEnvironment.scala b/core/src/test/scala/zio/nebula/ZioNebulaEnvironment.scala
index adb032c..e867993 100644
--- a/core/src/test/scala/zio/nebula/ZioNebulaEnvironment.scala
+++ b/core/src/test/scala/zio/nebula/ZioNebulaEnvironment.scala
@@ -39,15 +39,10 @@ object ZioNebulaEnvironment {
         maxConnsSize = 10,
         intervalIdleMills = 100,
         waitTimeMills = 100,
-        sslParam = None
-      )
-    ) ++ ZLayer.fromZIO(
-      ZIO.attempt(
-        NebulaSessionPoolConfig(
-          List(NebulaHostAddress(host, port)),
-          NebulaAuth(defaultUser, defaultPwd),
-          defaultSpace
-        )
+        sslParam = None,
+        address = List(NebulaHostAddress(host, port)),
+        auth = NebulaAuth(defaultUser, defaultPwd),
+        spaceName = Some(defaultSpace)
       )
     )