Good remark, but it doesn't suffice to change the schemas. I also changed <core:managed-persistence-context/> to <persistence:managed-persistence-context/> which I think is not documented in the migration guide. Now my problem with the Query and Home is solved but there might be other things around to update (namespaces like jms...) ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4116910#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...