You say exactely 'like' the jbpm webapp (the websale is just a process IN the webapp). Did you develop something yourself? (re) opening the hibernate session happens automagically in the webapp on each post to the server by filters configured in web.xml (jbpmcontexfilter). So i'd start looking there and compare it to what you did yourself View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961676#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...