Before I continue with the use cases, two caveats. 1) I going to be loose with what I explain, and try to explain it from a user's point of view. e.g. If talk about intercepting database calls on Oracle, the user is unlikely to know that Oracle is the implementing class and instead specify join points on the jdbc interfaces. In the following I'll probably say both but it is really the same thing, hopefully you can follow this loose speak without pulling me up on what is done technically. 2) Some of what I describe as not possible can be done, but it is either not easy or not obvious how to do it. e.g. In some scoping situations you can make it work by using the MC's aop-mc-int and use proxies to get "instance level adivce stacks" but I'm not assuming that is what will be or we want to be used in all cases? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4060840#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...