A minor limitation of this is the tpc/target map is stored as a static field in the invoker proxy. So, if two beans involved in the tx use different proxy types (say unified and pooled), the chosen server won't be the same. There's no real good way around this, since use of different proxy types implies different invokers on the server side, and hence different sets of targets. The above comment is meant for the tiny fine print at the bottom of the documentation of this. ;-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077936#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...