Also have a look at this http://www.jboss.org/community/wiki/ChangeDefaultDataSource View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4261393#4261393 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4261393