Hi All other threads are waiting for lock <0x471a79e0> and yes, it is locked by the following thread in: | - locked <0x471a79e0> (a com.cisco.nm.cmp.gjc.cm.UserConnectionImpl) | at com.cisco.nm.cmp.gjc.cm.GWCommandListenerImpl.send(GWCommandListenerImpl.java:207) | | But, I still can't understand why this thread is waiting on | at java.lang.Object.wait(Native Method) | - waiting on <0x47080560> (a EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock) | at java.lang.Object.wait(Object.java:474) | at EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock.acquire(WriterPreferenceReadWriteLock.java:163) | - locked <0x47080560> (a EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock) | at org.jboss.messaging.core.impl.postoffice.MessagingPostOffice.routeInternal(MessagingPostOffice.java:2075) | at org.jboss.messaging.core.impl.postoffice.MessagingPostOffice.route(MessagingPostOffice.java:489) | at org.jboss.jms.server.endpoint.ServerConnectionEndpoint.sendMessage(ServerConnectionEndpoint.java:741) | at org.jboss.jms.server.endpoint.ServerSessionEndpoint.send(ServerSessionEndpoint.java:383) | While no other thread is holding 0x47080560 Can you please advise? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4150753#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...