I don't have much. I think you misread DbPersistenceService.getSession(). Reading the first branch in DbPersistenceService.getSession(), it looks like an implementation of session-sharing - the first DbPersistenceService to get a session is responsible for closing it, and others just reuse it. So I suspect you're barking up the wrong tree in looking for your problem. When you try to get the process list, what do you do? Are you on a thread that has already done some JBPM work? Is it possible that you're doubly-initializing something - maybe creating a second JbpmContext without closing the first, or something like that? [I don't know for certain that two JbpmContexts is bad, but I suspect it is - in any event , it's just an example.] -Ed Staub View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4070527#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...