OK, I really think you're doing Bad Stuff here. (1) never try to have a managed entity / persistence context around for more than a single optimistic transaction. If you try to have a managed entity sitting there for an indefinite period of time, you will get into lots of problems when other users update data underneath you. (2) when a tx fails, you MUST throw away the PC and start again - that is the rule of PCs. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4061005#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...