See the post "Seam 2.0.0.GA jpa failed in tomcat6" and its answer. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4105810#4105810 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4105810