Hi,

sometimes I have the error shown in the log below on completing workItems (via REST api). My runtime strategy is PER_PROCESS_INSTANCE.

Thanks in advance

Laura

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16:44:04,783 WARN  [com.arjuna.ats.arjuna] (pool-26-thread-1) ARJUNA012125: TwoPhaseCoordinator.beforeCompletion - failed for SynchronizationImple< 0:ffff7f000001:2e750f22:56051332:fb54c, org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization@8693cef >: javax.persistence.OptimisticLockException: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.persistence.processinstance.ProcessInstanceInfo#4046]

  at org.hibernate.ejb.AbstractEntityManagerImpl.wrapStaleStateException(AbstractEntityManagerImpl.java:1390) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1308) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1289) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1295) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.ejb.AbstractEntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(AbstractEntityManagerImpl.java:1481) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorImpl.beforeCompletion(SynchronizationCallbackCoordinatorImpl.java:109) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:53) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76)

  at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:273)

  at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:93)

  at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:164)

  at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1165)

  at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:117)

  at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:75)

  at org.jboss.tm.usertx.client.ServerVMClientUserTransaction.commit(ServerVMClientUserTransaction.java:167)

  at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:209) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:512) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:73) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:60) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:353) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

  at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:145) [drools-core-6.1.0.Final.jar:6.1.0.Final]

  at org.jbpm.executor.impl.wih.AsyncWorkItemHandlerCmdCallback.onCommandDone(AsyncWorkItemHandlerCmdCallback.java:62) [jbpm-executor-6.1.0.Final.jar:6.1.0.Final]

  at org.jbpm.executor.impl.AvailableJobsExecutor.executeJob(AvailableJobsExecutor.java:125) [jbpm-executor-6.1.0.Final.jar:6.1.0.Final]

  at org.jbpm.executor.impl.ExecutorRunnable.run(ExecutorRunnable.java:42) [jbpm-executor-6.1.0.Final.jar:6.1.0.Final]

  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [rt.jar:1.6.0_35]

  at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) [rt.jar:1.6.0_35]

  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) [rt.jar:1.6.0_35]

  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) [rt.jar:1.6.0_35]

  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) [rt.jar:1.6.0_35]

  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) [rt.jar:1.6.0_35]

  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_35]

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_35]

  at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_35]

Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.jbpm.persistence.processinstance.ProcessInstanceInfo#4046]

  at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:2359) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3010) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2908) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3237) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:113) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:272) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:264) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:187) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1081) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:315) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorImpl.beforeCompletion(SynchronizationCallbackCoordinatorImpl.java:104) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]

  ... 29 more

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