Prachi M [http://community.jboss.org/people/mukh.prac] replied to the discussion "jbpm 4.3 - org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update" To view the discussion, visit: http://community.jboss.org/message/552798#552798 -------------------------------------------------------------- Hi All, Thanks for sharing the information. I am facing exactly similar issues while dealing with jBPM 4.3 JobExecutor and asynchronous calls. I am using HSQL DB and would be switching to DB2 in a day or two. Could you please share any workarounds / solutions you used (e.g updating execution.hbm file etc.) to overcome the problem. I am facing various kinds of Hibernate issues, some of them being: ConstraintViolationException StaleObjectStateException Could not execute JDBC Batch update, etc. Some steps I have already tried out: Update the jbpm.cfg.xml file by adding jta and hiberate related mapping files. Using continue  = sync, async / exclusivre, but all options throw the same error. Please help me on the same. Its needed on urgent basis. Many thanks in advance, Prachi -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/552798#552798] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]