hello, i am using jboss 4.2.2 and have a MDB which works fine, until onMessage is left. 08 Sep 2008 21:07:40,187 WARN [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.BasicAction_58] - Abort of action id a31500a:6df:48c5757a:1a5 invoked while multiple threads active within it. 08 Sep 2008 21:07:40,187 WARN [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.CheckedAction_2] - CheckedAction::check - atomic action a31500a:6df:48c5757a:1a5 aborting with 1 threads active! Then the message is resent again and again even though @ActivationConfigProperty(propertyName = "dLQMaxResent", propertyValue="1"), I think, the transaction service gets the wrong transaction or the transaction is already closed. I am using a third party software in onMessage and maybe they close the transaction. thanks in advance heiko View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4175151#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...