Ive re factored the RA to use core, JBMMessageHandler now implements MessageHandler. However I'm still getting the same problem. Ive added a (commented out) test to BasicXaTest that basically does the same thing and it always fails. This is what the test does. | session.start(xid, XAResource.TMNOFLAGS); | first message received | session.end(xid, XAResource.TMSUCCESS); | session.rollback(xid); | session.start(xid, XAResource.TMNOFLAGS); | second message received | session.end(xid, XAResource.TMSUCCESS); | session.rollback(xid); | session.start(xid, XAResource.TMNOFLAGS); | and so on | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4214139#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...