The application.xml looks correct. However, the classnotfoundexception stacktrace, which even lists the jar files where the class is looked for, does not show any reference to your jar files (or is it truncated while posting?) In your jboss-app.xml, i see that you are using anonymous wrote : java2ParentDelegaton=true This property, changes the order in which the jar files are looked for while loading a class (parent-first). Can you try changing it to parent-last: java2ParentDelegaton=false However, i would be a bit surprised if this change works :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4199290#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...