It along with many others are already in the jboss5 config of the jbossxb layer. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3993207#3993207 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3993207