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Server.log showing the error "Failed to acquire the pool semaphore"

deo swaroop
Ranch Hand

Joined: May 21, 2008
Posts: 30
Hi All,

I am getting this error after deploying the ear in whp Jboss Please let me know as I how to resolve that.

below is the exception:

2010-11-04 18:52:14,001 ERROR [org.jboss.resource.adapter.jms.inflow.JmsServerSession] Unexpected error delivering message delegator->JBossMessage[4236486941779903906]:NON-PERSISTENT, deliveryId=1442

javax.ejb.EJBException: Failed to acquire the pool semaphore, strictTimeout=10000

at org.jboss.ejb3.StrictMaxPool.get(

at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(

at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(

at org.jboss.ejb3.mdb.MessagingContainer.localInvoke(


at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy.invoke(

at $Proxy197.onMessage(Unknown Source)

at org.jboss.resource.adapter.jms.inflow.JmsServerSession.onMessage(

at org.jboss.jms.client.container.ClientConsumer.callOnMessageStatic(

at org.jboss.jms.client.container.SessionAspect.handleRun(


at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$

at org.jboss.jms.client.container.ClosedInterceptor.invoke(

at org.jboss.aop.advice.PerInstanceInterceptor.invoke(

at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$






at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$

Peter Johnson

Joined: May 14, 2008
Posts: 5852

whp Jboss

What is whp? There is no such JBoss AS version (5.1.0 is the highest 5.x version).

This error involves messaging. What are you doing in regards to messaging? Have you changed the messaging configuration in any way?

Exactly what is in this ear file you deployed? I assume that JBoss AS starts just fine if the EAR is not deployed?

JBoss In Action
I agree. Here's the link:
subject: Server.log showing the error "Failed to acquire the pool semaphore"
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