Well, let me answer my own question, as usual:) This link helped a lot: http://pveentjer.wordpress.com/2007/02/19/sharing-hibernate-entities-betw... So, in problematic Message consumer, which has session bound to its own thread with different state than in DB, 1 magic line should be added at the start of onMessage() method: | context.getSession().clear(); | It seems that I have to learn hibernate if I intend to use JBPM :) regards Milan View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4045249#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...