anonymous wrote : So if there is an impossibility it doesn't come from sharing the transactional context between threads but from asynchronicity. What do you think? This is true in the case of the X/Open Distributed Transaction Processing specifications. The problem with a client starting a transaction and then making an asynchronous call to a remote server is that the client may call commit whilst the server is still trying to do transactional work. To cater for this scenario X/Open disallows transaction propagation on asynchronous requests. This is in contrast to synchronous or conversational requests in which case context propagation is allowed. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4255781#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...