Have you configured classloader isolation for your application by specifying <jboss-app> | <loader-repository> | com.example:loader=unique-archive-name | <loader-repository-config> | java2ParentDelegation=false | </loader-repository-config> | </loader-repository> | </jboss-app> in the jboss-app.xml file of your ear. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4018565#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...