In a forum I saw that 3 elements are required for hibernate: - a javabean - a mapping file - a configuration file I wrote the last one only, because in jBPM documentation there is no trace of the others. I also saw that jBPM handle everything for the persistance, so that we just have to execute the contextInstance.setVariable(). Am I right? What did I forget? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217316#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...