Andreas Mueller [https://community.jboss.org/people/amueller] created the discussion "Re: Bug in creating ManagedConnectionFactory instance?" To view the discussion, visit: https://community.jboss.org/message/738724#738724 -------------------------------------------------------------- How do you manage if there is only one MCF class to create a Queue/Topic/unified CF but if I want to create and bind a TopicConnectionFactory? This seems not to be possible. A further issue is that I don't get it done to enlist an MDB in an XA transaction before onMessage is called. The MDB receives a message and sends a reply through the same RA  (via the MCF) and should do that in the same XA tx. My ejb-jar.xml has this attribute set:       <transaction-type>Container</transaction-type> But I'm not sure how to force to start an XA tx before onMessage is called. Currently the received message is non-transacted and the outgoing message is XA. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/738724#738724] Start a new discussion in IronJacamar at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]