hai friends,
I am using jboss as an appication server for my project. When i do performance test on that, 4 clients simultaneously accessing my jboss server, at that time deadlock occurs. Deadlock occur in EJBContainer side. Please help me to resolve this. At the time of deadlock status of 4 clients are

Client 1:
---------
SocketInputStream.socketRead0(FileDescriptor, byte[], int, int, int) line: not available [native method]
SocketInputStream.read(byte[], int, int) line: 129
SQLServerByteOrderedDataReader.readPacketIntoPrimaryBuffer() line: not available
SQLServerByteOrderedDataReader.receive() line: not available
TDSExecuteRequest.submitRequest() line: not available
TDSExecuteRequest(TDSRequest).execute(BaseWarnings) line: not available
SQLServerImplStatement.execute() line: not available
BaseStatement.commonExecute() line: not available
BaseStatement.executeUpdateInternal() line: not available
BaseStatement.executeUpdate(String) line: not available
WrappedStatement.executeUpdate(String) line: 229

Client 2:
----------
SocketInputStream.socketRead0(FileDescriptor, byte[], int, int, int) line: not available [native method]
SocketInputStream.read(byte[], int, int) line: 129
SQLServerByteOrderedDataReader.readPacketIntoPrimaryBuffer() line: not available
SQLServerByteOrderedDataReader.receive() line: not available
TDSExecuteRequest.submitRequest() line: not available
TDSExecuteRequest(TDSRequest).execute(BaseWarnings) line: not available
SQLServerImplStatement.execute() line: not available
BaseStatement.commonExecute() line: not available
BaseStatement.executeUpdateInternal() line: not available
BaseStatement.executeUpdate(String) line: not available
WrappedStatement.executeUpdate(String) line: 229

Client 3:
----------
Object.wait(long) line: not available [native method]
QueuedPessimisticEJBLock.waitForTx(Transaction, boolean) line: 332
QueuedPessimisticEJBLock.doSchedule(Invocation) line: 236
QueuedPessimisticEJBLock.schedule(Invocation) line: 183
EntityLockInterceptor.invoke(Invocation) line: 85
EntityCreationInterceptor.invoke(Invocation) line: 53
CallValidationInterceptor.invoke(Invocation) line: 48
TxInterceptorCMT(AbstractTxInterceptor).invokeNext(Invocation, boolean) line: 105
TxInterceptorCMT.runWithTransactions(Invocation) line: 316
TxInterceptorCMT.invoke(Invocation) line: 149
SecurityInterceptor.invoke(Invocation) line: 128
LogInterceptor.invoke(Invocation) line: 191
ProxyFactoryFinderInterceptor.invoke(Invocation) line: 122
EntityContainer.internalInvoke(Invocation) line: 514
EntityContainer(Container).invoke(Invocation) line: 854

Client 4:
----------
Object.wait(long) line: not available [native method]
QueuedPessimisticEJBLock.waitForTx(Transaction, boolean) line: 332
QueuedPessimisticEJBLock.doSchedule(Invocation) line: 236
QueuedPessimisticEJBLock.schedule(Invocation) line: 183
EntityLockInterceptor.invoke(Invocation) line: 85
EntityCreationInterceptor.invoke(Invocation) line: 53
CallValidationInterceptor.invoke(Invocation) line: 48
TxInterceptorCMT(AbstractTxInterceptor).invokeNext(Invocation, boolean) line: 105
TxInterceptorCMT.runWithTransactions(Invocation) line: 316
TxInterceptorCMT.invoke(Invocation) line: 149
SecurityInterceptor.invoke(Invocation) line: 128
LogInterceptor.invoke(Invocation) line: 191
ProxyFactoryFinderInterceptor.invoke(Invocation) line: 122
EntityContainer.internalInvoke(Invocation) line: 514
EntityContainer(Container).invoke(Invocation) line: 854