well then, I should give it a try, thanks for the advice. Did you actually do it, or see it working? in my project they had already problems trying to use Hibernate with our Glassfish, and I thought having both Hibernate and TopLink could lead to strange behaviors. but I am new to BPM, and I appreciate your answer, since it is a bit difficult for me to understand all implications without experience thanks ! -- Nicolas View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242873#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...