I have come across an in issue in our production server. I am using a named query to get some session details and out of 100 times 1 or 2 fails. Pls find the exception below. I have no idea why this error is coming when it working all the other times in the same method. I am using JBoss EAP 4.0.3 and Hibernate 3.0.5. Below stacktrace is a wrapped. Since it happens only in the production server we have no option to get a full stacktrace. Pls help me to resolve this issue. I have made sure that there is no duplicate SessionInfo.hbm.xml in the ear. Kindly let me know if you need more details.

Message :Named query not known: SessionInfo.findSession

TRACE :
Cause of the exception is..
+----------------------------------------------------------+
com.emirates.jfoundation.exception.ServiceException
+----------------------------------------------------------+
com.emirates.jfoundation.exception.ServiceException: Named query not known: SessionInfo.findSession

at com.emirates.jfoundation.security.session.SessionManager.isValidSession(SessionManager.java:173)
at com.emirates.jfoundation.security.hooks.SecurityInterceptor.processOnEntry(SecurityInterceptor.java:65)
at com.emirates.jfoundation.servicecollaborator.runtime.EJBServiceRuntime.preTransaction(EJBServiceRuntime.java:144)
at com.emirates.locomotive.server.stock.implementation.StockServiceBean.getDocumentHistory(StockServiceBean.java:908)
at sun.reflect.GeneratedMethodAccessor734.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:378)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
at org.jboss.ejb.plugins.CleanShutdownInterceptor.invoke(CleanShutdownInterceptor.java:278)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648)
at org.jboss.ejb.Container.invoke(Container.java:960)
at sun.reflect.GeneratedMethodAccessor140.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.invocation.jrmp.server.JRMPInvokerHA.invoke(JRMPInvokerHA.java:176)
at sun.reflect.GeneratedMethodAccessor139.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
at java.lang.Thread.run(Thread.java:595)

Hi, I'm sorry I would try to be helpful but 3.0.5 is way too old for my knowledge (several years!), I don't know if something like this occurred in other cases.
This seems like a concurrency issue, likely fixed in more recent version of Hibernate.
Sounds you're using the supported version (EAP), you should get in touch with JBoss support they should know or be able to fix it.

Consider having a look on the issue tracker: http://opensource.atlassian.com/project ... browse/HHH