markus, yes, what you said is right. i am starting a transaction in one thread but issuing a commit/rollback from a different thread on the same object instance. But there is no other way round as i am using gridgain and there was no alternate design. Can i use JTA in this case. how can i use transaction manager in this case please advice View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4256580#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...