Error java.lang.NoClassDefFoundError: com/ibm/mq/server/MQSESSION

[HiteshMehra]

Hi all,
I am getting an error while trying to connect to the MQ.
The error is
java.lang.NoClassDefFoundError: com/ibm/mq/server/MQSESSION
at com.ibm.mq.MQSESSIONServer.getMQSESSION(MQSESSIONS erver.java:68)
at com.ibm.mq.MQSESSION.getSession(MQSESSION.java:493 )
at com.ibm.mq.MQManagedConnectionJ11.<init>(MQManaged ConnectionJ11.java:155)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11._ createManagedConnection(MQBindingsManagedConnectio nFactoryJ11.java:153)

at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11.c reateManagedConnection(MQBindingsManagedConnection FactoryJ11.java:189)

at com.ibm.mq.StoredManagedConnection.<init>(StoredMa nagedConnection.java:80)
at com.ibm.mq.MQSimpleConnectionManager.allocateConne ction(MQSimpleConnectionManager.java:171)
at com.ibm.mq.MQQueueManager.obtainBaseMQQueueManager (MQQueueManager.java:754)
at com.ibm.mq.MQQueueManager.construct(MQQueueManager .java:688)
at com.ibm.mq.MQQueueManager.<init>(MQQueueManager.ja va:417)
at clyde.qbase.impl.MQ.QMQQueueMgrConnection.getMQMan ager(Unknown Source)
at clyde.qbase.impl.MQ.QMQQueueMgrConnection.rollback (Unknown Source)
at clyde.qbase.queue.PoolableQMgrCnxn$5.doit(Unknown Source)
at clyde.qbase.queue.PoolableQMgrCnxn.tryOperation(Un known Source)
at clyde.qbase.queue.PoolableQMgrCnxn.rollback(Unknow n Source)
at clyde.qbase.queue.QueueMgrConnection.rollback(Unkn own Source)
at clyde.qbase.queue.QueueTransaction.rollback(Unknow n Source)
at clyde.q.server.QMsgServerImp.run(Unknown Source)
at clyde.q.server.QMsgServer.run(Unknown Source)
at com.nm.cbpel.server.CBPELRunnable.run(CBPELRunnabl e.java:126)
at clyde.core.thread.WorkerThreadManager$WorkerRunnab le.run(Unknown Source)
at java.lang.Thread.run(Thread.java:568)


I checked my classpath and it looks fine. Also I am using the latest com.ibm.mq.jar. Can someone tell me what can be the possible issue.
Its urgent.
Thanks,
Hitesh