To change DB for jbpm 3 use http://wiki.jboss.org/wiki/Wiki.jsp?page=JbpmOnPostgreSQL. It's works. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4005264#4005264 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4005264