You have to scope your .ear files. In each one of the.ear files, add this to the META-INF/jboss-app.xml file: <jboss-app> | ..... | <loader-repository>yourApp:loader=yourApp.ear</loader-repository> | </jboss-app> This way, each .ear will be loaded in a separate scope, and the same will apply to the .aop file inside of them. Alternatively, you can change the "Isolated" attribute value of ear-deployer.xml file instead of adding the loader-repository tag above to each ear (this will scope all ear deployed files of your server). Notice that isolating each ear in a scope will forbid classes of one ear file to see classes of the other. If this is not what you want, I think that deploying a single .aop file would also work. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4076972#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...