good to know, but actually I want them to be executed concurrently. I have (long running) sub processes that have to be executed simultaneously, two for now, but more later. it's just the synchronization in the parent process that is making trouble.... concerning "exclusive" : I noticed that some attributes/values are in the code, but not in the documentation and not in the schema.... just not stable enough? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4049778#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...