Yes, JTA transactions in the EAR are majorly broken. The underlying exception *appears* to be: java.lang.NullPointerException at org.jbpm.persistence.db.DbPersistenceService.rollback(DbPersistenceService.java:304) at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:238) at org.jbpm.svc.Services.close(Services.java:222) Investigating further. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4025601#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...