Hi jaikiran Thanks for the link. Exactly that link did not catch my attention as I was searching the wiki :-( But as I am diving into this issue I guess I know what to do to resolve. Repackage the ear. I have already done so and it is bringing me further. With respect of this beeing the JNDI forum: I have classes that really are shared among the two jars: app-web.war and app-ejb.jar. Would it be approriate to let those classes to into one single jar, say app-shared.jar, that is then put into the ear? This would give them a "unique identity" with respect of the class loader right? Thanks in advance. You helped me alot already. Regards Henrik View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4025600#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...