I opened a new thread because it is another issue. I use 2 connection factories : one which is clustered and one which is not. => I need 2 provider loader and 2 JMS XA Resource adapter. I'm wondering if the createConnection() on the ConnectionFactory provided by JMS-RA will have the same effect (roundrobin) as the createConnection() on the ConnectionFactory provided by a jndi lookup. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4143460#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...