to sum up, We return false from setTransactionTimeout and use our own tx timeout handler We only rollback non-prepared tx when they timed out (with a default tx timeout of 5 mins) A prepared tx will *not* be checked for timeout. It is up to the admin to decide a heuristic completion (we offer management operations to commit/rollback a prepared tx). Related to this, XAResource.recover() javadoc specifies to return prepared tx *and* heuristically completed tx. Currently, we return only the prepared tx. Once [link]https://jira.jboss.org/jira/browse/HORNETQ-33[/link] is fixed, we will be able to return the heuristically completed tx. I'm curious to know how the TM will handle the heuristically completed tx returned by recover()... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4257319#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...