No, if a compliant ORB is supposed to throw OBJECT_NOT_EXIST if there's a call on a reference/IOR to a non-persistent instance that it can no longer find. This is different to, say, COMM_FAILURE or one of the other low-level SystemExceptions. In the case of a timeout the transaction will be garbage collected and remove itself from the POA, which will mean any outstanding requests from remote clients should (assuming the ORB works) get back OBJECT_NOT_EXIST. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204021#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...