Found one Java-level deadlock: ============================= "Thread-18": waiting for ownable synchronizer 0xab11cc10, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "RMI TCP Connection(2)-127.0.0.1" "RMI TCP Connection(2)-127.0.0.1": waiting to lock monitor 0x4f2f0f3c (object 0xab0be500, a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction), which is held by "Thread-18" Java stack information for the threads listed above: =================================================== "Thread-18": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0xab11cc10> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:747) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:778) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1114) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262) at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.lock(BaseWrapperManagedConnection.java:253) at org.jboss.resource.adapter.jdbc.local.LocalManagedConnection.rollback(LocalManagedConnection.java:87) at org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.rollback(TxConnectionManager.java:1182) at com.arjuna.ats.internal.jta.resources.arjunacore.XAOnePhaseResource.rollback(XAOnePhaseResource.java:138) at com.arjuna.ats.arjuna.LastResourceRecord.topLevelAbort(LastResourceRecord.java:143) at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3270) at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3248) at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1933) - locked <0xab0be500> (a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction) at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.cancel(TwoPhaseCoordinator.java:114) at com.arjuna.ats.arjuna.AtomicAction.cancel(AtomicAction.java:213) at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.rollback(TransactionImple.java:332) at knrc.db.TestDeadlockConnectionHandler$1.run(TestDeadlockConnectionHandler.java:50) at java.lang.Thread.run(Thread.java:619) "RMI TCP Connection(2)-127.0.0.1": at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1881) - waiting to lock <0xab0be500> (a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction) at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.cancel(TwoPhaseCoordinator.java:114) at com.arjuna.ats.arjuna.AtomicAction.abort(AtomicAction.java:184) at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.rollbackAndDisassociate(TransactionImple.java:1505) at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.rollback(BaseTransaction.java:165) at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.rollback(BaseTransactionManagerDelegate.java:114) at knrc.deadlock.TriggerDeadlockService.triggerDeadlock(TriggerDeadlockService.java:60) 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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) 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 org.jboss.jmx.connector.invoker.InvokerAdaptorService.invoke(InvokerAdaptorService.java:266) 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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138) at org.jboss.mx.server.Invocation.invoke(Invocation.java:90) at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140) at org.jboss.jmx.connector.invoker.SerializableInterceptor.invoke(SerializableInterceptor.java:74) at org.jboss.jmx.connector.invoker.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:107) at org.jboss.mx.server.Invocation.invoke(Invocation.java:90) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) at org.jboss.invocation.jrmp.server.JRMPProxyFactory.invoke(JRMPProxyFactory.java:180) 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 org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:855) at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:422) 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 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305) at sun.rmi.transport.Transport$1.run(Transport.java:159) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:155) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Found 1 deadlock.