"ataylor" wrote : Ok, I think the consensus is we roll back the tx, this will clear any acknowledgements or messages. The question is do we remove the tx completely or leave it with the resource manager and return XA_RBTIMEOUT. I think as long as the tm can handle the first case then we should just do that as its simpler. Yes, but if Arnaud is right we also need to return false to set timeout. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4186391#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...