I've also added some diagnostics to aid in diagnosing where sessions were created that subsequently weren't closed. When gc closes a connection you will see something like this in the logs: | Finalizer] 20:14:43,244 WARNING [org.jboss.messaging.core.client.impl.DelegatingSession] I'm closing a ClientSession you left open. Please make sure you close all ClientSessions explicitly before letting them go out of scope! | [Finalizer] 20:14:43,244 WARNING [org.jboss.messaging.core.client.impl.DelegatingSession] The session you didn't close was created here: | java.lang.Exception | at org.jboss.messaging.core.client.impl.DelegatingSession.<init>(DelegatingSession.java:83) | at org.jboss.messaging.core.client.impl.ConnectionManagerImpl.createSession(ConnectionManagerImpl.java:375) | at org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSessionInternal(ClientSessionFactoryImpl.java:968) | at org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSession(ClientSessionFactoryImpl.java:758) | at org.jboss.messaging.tests.integration.client.CommitRollbackTest.testReceiveWithCommit(CommitRollbackTest.java:62) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:597) | at junit.framework.TestCase.runTest(TestCase.java:164) | at junit.framework.TestCase.runBare(TestCase.java:130) | at junit.framework.TestResult$1.protect(TestResult.java:106) | at junit.framework.TestResult.runProtected(TestResult.java:124) | at junit.framework.TestResult.run(TestResult.java:109) | at junit.framework.TestCase.run(TestCase.java:120) | at junit.framework.TestSuite.runTest(TestSuite.java:230) | at junit.framework.TestSuite.run(TestSuite.java:225) | at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:421) | at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:912) | at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:743) | The stack trace will tell you where in the code the session was created, that later wasn't closed. So we just need to run the test suite and look through the logs for these stack traces and fix the tests that don't close the sessions. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4249764#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...