Getting a

[fake_bobbi]

We currently support two servers: WebLogic and JBoss.
I get the following exception only under JBoss.
Any ideas what might be causing it?

2005-01-03 10:58:36,546 ERROR [org.jboss.ejb.plugins.LogInterceptor] EJBException:
javax.ejb.EJBException: Failed to acquire the pool semaphore, strictTimeout=120000
at org.jboss.ejb.plugins.AbstractInstancePool.get(AbstractInstancePool.java:132)
at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:48)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:240)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:90)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:374)
at org.jboss.ejb.Container.invoke(Container.java:700)
at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:824)
at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1114)
at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:256)
at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:633)
at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:433)
at org.jboss.mq.SpySession.run(SpySession.java:298)
at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:180)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:732)
at java.lang.Thread.run(Thread.java:534)

[genman]

You probably misconfigured your MDB pool. There are two settings, one controls the number of MDB instances available, the other the number of concurrent sessions/threads. If the number of instances < number of sessions/threads, you can get this.