[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Bug in transactional delivery in an MDB

"ovidiu.feodorov(a)jboss.com" wrote : | On one hand, the fixes for JBMESSAGING-410 and JBMESSAGING-520 insure that a JMS session created using a JMS connection produced by the JCA connection factory behaves as NON-TRANSACTED in absence of a global JTA transaction. | | This is an intuitive behavior, users rely on it, JBossMQ behaves similarly, and reportedly, other JMS providers as well. | There is actually nothing in the spec about this behaviour. The XA stuff is massively underspecified in the JMS spec. And of course it is optional whether a JMS impl supports XA. The JBossMQ behaviour is to assume that an XASession behaves like AUTO_ACKNOWLEDGE when the XASession is not enlisted in a JTA transaction. (Some JMS implements throw an exception in this case). There is one exception to this. When the XASession is being used as part of a ServerSessionPool, the semantics need to be receive then enlist. So for this, the XASession behaves like there is a transaction, it will be told later what XID to use for the 2PC protocol. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4004783#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...