Use CMT and set the trans-attribute to Required. Also configure jBPM to use the JtaDbPersistenceServiceFactory. This is easier if you use jPDL 3.2.3 or later and deploy the product as an enterprise app (i.e. jbpm-enterprise.ear). See the chapter on Java EE app server facilities in the latest user guide for a description of the jBPM enterprise components. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4162969#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...