It *may* be safe based on your configuration, but either way it would certainly be brittle. E.g., if you use buddy replication, JBC uses the same RPC mechanism to assign buddies, etc. And there is no good reason to delay these, and your approach won't be able to tell the difference. The interceptor chain is the proper extension point for such things since you have a definitive idea of the command/methodcall being invoked (including payload, etc). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168578#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...