"adrian(a)jboss.org" wrote : In short, if you want this semantic use 2PC. | There is no point building something complicated which is eventually | going to boil down to something more intensive than tranaction logging | anyway! I think this is less intensive than tx logging since we only have to log the id rather than the entire tx state, also we don't have the extra client->server call for the prepare. Another advantage is that it will work with existing (non 2PC) client applications. i.e. they don't have to rewrite their applications to use 2PC to take advantage of this extra level of QoS. Having said, all that, this task isnt a major priority - most of our competitors don't provide this functionality, although at least one does (I have just googled). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977256#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...