[jboss-user] [JBossMQ] - User: guest is NOT authenticated

[chrismm]

We have 14 Jboss 4.2.2 systems running on the same server, at midnight they all simultaneously update their runDate in the database (Oracle) and occasionally (twice a week ?) they produce this error, any idea what might cause this ??
The only thing I can think is some kind of limit to number of sessions connecting to the underlying oracle database.
Thanks,
Chris Milburn.

[00:00:04,090,JMSHelper] sendMessageToQueue
javax.jms.JMSException: Could not create a session: org.jboss.resource.JBossResourceException: Unable to setup connection; - nested throwable: (javax.jms.JMSSecurityException: User: guest is NOT authenticated)	at org.jboss.resource.adapter.jms.JmsSessionFactoryImpl.allocateConnection(JmsSessionFactoryImpl.java:403)	at org.jboss.resource.adapter.jms.JmsSessionFactoryImpl.createQueueSession(JmsSessionFactoryImpl.java:144)	at com.rolfeandnolan.merlin.utility.jmshelper.JMSHelper.sendMessageToQueue(JMSHelper.java:159)	at com.rolfeandnolan.merlin.ejb.eventmanager.EventManagerEJB.createEvent(EventManagerEJB.java:131)	at sun.reflect.GeneratedMethodAccessor171.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at 

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