anonymous wrote : I have read the general paragraphs and the ones that talk about asynchronicity in http://www.opengroup.org/onlinepubs/009680699/toc.pdf , | is this the specification you're talking about? I don't see where it says this, then again i didn't understand everything. I was thinking of the XATMI specification http://www.opengroup.org/pubs/catalog/c506.htm which defines how clients and servers interact in a DTP environment and the conditions under which the tx context is propagated. Section 3.5.2 says that if the client issues an asynchronous request and does not expect a reply then the request must not be issued in transaction mode. The client must gather up all replies to his outstanding service requests (the checked semantics refered to earlier in this forum thread) prior to commit. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4255889#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...