So can I take it that what I am trying to do should be doable? ataylor: I am using what comes bundled with 4.0.2. I can try moving to 4.2.2 just to know, if you're saying that this pattern is not supported under 4.0.2, but 4.0.2 is still our production environment. timfox: The example I used came from the 4.0.2 admin guide. Since my last post, I noticed the transacted-session problem, said "aha!", and changed the first argument to createQueueSession() to true. This had no effect :{(> Where might I find working examples of this, please? In the forum? I've read the admin guide, the wiki, the users guide, and failed. I didn't really expect to find a working example of an Interceptor, so my first question is "should this work?". The JBMXADataSource wiki entry leads me to believe that can; it just lacks a working example. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171492#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...