Edward Odufuwa [http://community.jboss.org/people/btayo1] created the discussion "Re: Process flush trying to save UnpersistableInstance" To view the discussion, visit: http://community.jboss.org/message/573277#573277 -------------------------------------------------------------- I  using Mule 2.2 and jBPM 3.2.7. And at the end of the process during  persisting  the variable instance within the process I get the following  errors ERROR  2010-11-28 15:23:41,515 [jBpmConnector.dispatcher.1]  org.mule.DefaultExceptionStrategy: Caught exception in Exception  Strategy: *variable 'incoming' in 'TokenVariableMap20224a'  contains 'ACKNOWLEDGED': type 'java.lang.String' is unpersistable  according to the jbpm.varmapping.xml configuration* org.jbpm.JbpmException:  variable 'incoming' in 'TokenVariableMap20224a' contains  'ACKNOWLEDGED': type 'java.lang.String' is unpersistable according to  the jbpm.varmapping.xml configuration       at org.jbpm.svc.save.CheckUnpersistableVariablesOperation.save(CheckUnpersistableVariablesOperation.java:61)       at org.jbpm.svc.Services.save(Services.java:164)       at org.jbpm.JbpmContext.save(JbpmContext.java:427)       at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:152)       at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:164)       at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69)       at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:262)       at org.mule.work.WorkerContext.run(WorkerContext.java:310)       at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)       at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)       at java.lang.Thread.run(Unknown Source) ************** why would java.lang.String be an instanceof UnpersistableInstance? Where will have defined? I have reviewed the jbpm.varmapping.xml PS: i have also updated an existing thread at http://community.jboss.org/573273#573273 http://community.jboss.org/message/573273#573273 help?? Hi All, Further  investigation - i decided to remove all the  variable i have in the  context before completing the process - just to  confrim if my process  will actuall end. Bad news - i get the following errors ... INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: >>>   container of the   variables{MULE_SESSION=SUQ9NTE4Yzg1ZTQtZmIwYi0xMWRmLTgyYmItODFiZTcyODU0NjA4,   message= order placed!, incoming=ACKNOWLEDGED,   incomingSource=ProductOrderRequest,   productOrderRequest=com.bt.hqns.esb.message.ProductOrder@2219b4,   MULE_ENCODING=UTF-8,   MULE_CORRELATION_ID=518c85e3-fb0b-11df-82bb-81be72854608,   MULE_ENDPOINT=bpm://ProcessProductOrder,   submitWLR3FOStatus=ACKNOWLEDGED,   MULE_ORIGINATING_ENDPOINT=ProductOrderRequest} INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'MULE_SESSION' with value   'SUQ9NTE4Yzg1ZTQtZmIwYi0xMWRmLTgyYmItODFiZTcyODU0NjA4' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'message' with value 'order placed!' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'incoming' with value 'ACKNOWLEDGED' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'incomingSource' with value 'ProductOrderRequest' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'productOrderRequest' with value   'com.bt.hqns.esb.message.ProductOrder@2219b4' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'MULE_ENCODING' with value 'UTF-8' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'MULE_CORRELATION_ID' with value '518c85e3-fb0b-11df-82bb-81be72854608' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'MULE_ENDPOINT' with value 'bpm://ProcessProductOrder' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'submitWLR3FOStatus' with value 'ACKNOWLEDGED' INFO    2010-11-28 16:19:50,015 [jBpmConnector.dispatcher.1]   com.xxx.bpm.actions.RemoveAllVaribaleActionHandler: Removing variable   'MULE_ORIGINATING_ENDPOINT' with value 'ProductOrderRequest' ERROR   2010-11-28 16:19:50,046 [jBpmConnector.dispatcher.1]   org.mule.DefaultExceptionStrategy: Caught exception in Exception   Strategy: instance not of expected entity type:   org.jbpm.context.exe.variableinstance.UnpersistableInstance is not a:   org.jbpm.context.exe.VariableInstance org.hibernate.HibernateException:   instance not of expected entity type:   org.jbpm.context.exe.variableinstance.UnpersistableInstance is not a:   org.jbpm.context.exe.VariableInstance       at org.hibernate.persister.entity.AbstractEntityPersister.getSubclassEntityPersister(AbstractEntityPersister.java:3629)       at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1347)       at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180)       at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:512)       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80)       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)       at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507)       at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499)       at org.hibernate.engine.CascadingAction$1.cascade(CascadingAction.java:218)       at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)       at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)       at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)       at org.hibernate.engine.Cascade.cascade(Cascade.java:130)       at org.hibernate.event.def.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:431)       at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:265)       at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)       at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)       at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)       at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)       at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)       at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)       at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)       at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)       at org.jbpm.logging.db.DbLoggingService.log(DbLoggingService.java:50)       at org.jbpm.svc.save.SaveLogsOperation.save(SaveLogsOperation.java:47)       at org.jbpm.svc.Services.save(Services.java:164)       at org.jbpm.JbpmContext.save(JbpmContext.java:427)       at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:152)       at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:164)       at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69)       at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:262)       at org.mule.work.WorkerContext.run(WorkerContext.java:310)       at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)       at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)       at java.lang.Thread.run(Unknown Source) ********************** this definitly looks like a VariableInstance issues any ideas on how i fix this? 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