Pavel Sknar [https://community.jboss.org/people/pavel.sknar] created the discussion "Concurrent modification exception" To view the discussion, visit: https://community.jboss.org/message/739593#739593 -------------------------------------------------------------- I have exception: | Caused by: javax.persistence.RollbackException: Error while committing the transaction                                                                                          | | |     | at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:93)                                                                                                    | | |     | at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerSynchronization.afterCommit(ExtendedEntityManagerCreator.java:478)                     | | |     | ... 24 more                                                                                                                                                             | | | Caused by: java.util.ConcurrentModificationException                                                                                                                            | | |     | at java.util.HashMap$HashIterator.nextEntry(HashMap.java:806)                                                                                                           | | |     | at java.util.HashMap$KeyIterator.next(HashMap.java:841)                                                                                                                 | | |     | at org.drools.marshalling.impl.OutputMarshaller.writeWorkItem(OutputMarshaller.java:1078)                                                                               | | |     | at org.drools.persistence.info.WorkItemInfo.update(WorkItemInfo.java:134)                                                                                               | | |     | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)                                                                                                          | | |     | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)                                                                                        | | |     | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)                                                                                | | |     | at java.lang.reflect.Method.invoke(Method.java:601)                                                                                                                     | | |     | at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:37)                                                                                                    | | |     | at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:94)                                                                                | | |     | at org.hibernate.ejb.event.EntityCallbackHandler.preUpdate(EntityCallbackHandler.java:79)                                                                               | | |     | at org.hibernate.ejb.event.EJB3FlushEntityEventListener.invokeInterceptor(EJB3FlushEntityEventListener.java:61)                                                         | | |     | at org.hibernate.event.def.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:349)                                                 | | |     | at org.hibernate.event.def.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:287)                                                     | | |     | at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:155)                                                      | | |     | at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)                                                          | | |     | at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)                                             | | |     | at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)                                                                         | | |     | at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)                                                                                                          | | |     | at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)                                                                                                    | | |     | at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)                                                                                           | | |     | at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76) | -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/739593#739593] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]