Spend some time to view the "Connection leak" section here http://www.jboss.org/community/wiki/FAQJBossJCA View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241108#4241108 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4241108