[jboss-user] [JBoss jBPM] - HibernateException: null index column for collection

Hello, In a method of a stateless EJB3 I deployed the hello world process (of StarterKit) in a MySQL database, then manage to create an instance for it. Later in another function, I try to create a process instance with those 2 instructions | JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext(); | ProcessInstance processInstance = jbpmContext.newProcessInstance("test"); I then obtain the following exception : | javax.ejb.EJBException: org.hibernate.HibernateException: null index column for collection: org.jbpm.graph.def.ProcessDefinition.definitions | at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69) | ... | ... | at org.hibernate.collection.PersistentMap.values(PersistentMap.java:198) | at org.jbpm.graph.exe.ProcessInstance.<init>(ProcessInstance.java:103) | at org.jbpm.JbpmContext.newProcessInstance(JbpmContext.java:371) | ... | I tried several process with no success... and can't figure out where is the problem. My config : WinXP/JBoss4.0.4GA/JBPM3.1/MySQL jbpm.cfg.xml : | <jbpm-configuration> | <jbpm-context> | <service name="persistence"> | <factory> | <bean class="org.jbpm.persistence.db.DbPersistenceServiceFactory"> | <field name="isTransactionEnabled"><false /></field> | </bean> | </factory> | </service> | <service name='message' factory='org.jbpm.msg.db.DbMessageServiceFactory' /> | <service name='scheduler' factory='org.jbpm.scheduler.db.DbSchedulerServiceFactory' /> | <service name='logging' factory='org.jbpm.logging.db.DbLoggingServiceFactory' /> | <service name='authentication' factory='org.jbpm.security.authentication.DefaultAuthenticationServiceFactory' /> | </jbpm-context> | </jbpm-configuration> | For Hibernate I tried both MySQLDialect and MySQLInnoDBDialect Thanks in advance, Sebastien View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996282#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...