Exception on Timer-Execution under Weblogic

[syngolis]

I am evaluating the compatibility of jBPM to work in other application server environments. Actual i am on testing in weblogic (8.0, 9.0, 9.2).

It works in all versions perfectly, except the timer functionality.

In 8.0 no TimedObject.class exists, so it has to be done i an other way )-:
In 9.0 and 9.2 The timers are created in db, but at the execution date (duedate) an exception is thrown:

####<29.06.2007 9.59 Uhr CEST> <Error> <EJB> <winpc70> <AdminServer> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1183103982265> <BEA-011088> <The following error occurred while invoking the ejbTimeout(javax.ejb.Timer) method of EJB 'TimerServiceBean(Application: ISOWorkflow, EJBComponent: jbpm-enterprise.jar)'.
javax.ejb.EJBException: EJB Exception: : org.jbpm.JbpmException: couldn't execute timer
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.ejbTimeout(TimerServiceBean.java:105)
 at weblogic.ejb.container.timer.TimerImpl.timerExpired(TimerImpl.java:298)
 at weblogic.timers.internal.TimerImpl.run(TimerImpl.java:265)
 at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: javax.ejb.EJBException: EJB Exception: : org.jbpm.JbpmException: couldn't execute org.jbpm.scheduler.ejbtimer.ExecuteTimerCommand@dd5a9d
 at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:92)
 at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:61)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.ejbTimeout(TimerServiceBean.java:95)
 at weblogic.ejb.container.timer.TimerImpl.timerExpired(TimerImpl.java:298)
 at weblogic.timers.internal.TimerImpl.run(TimerImpl.java:265)
 at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: org.jbpm.graph.def.DelegationException: EJB Exception: ; nested exception is: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:376)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
 at org.jbpm.graph.def.ProcessDefinition$$EnhancerByCGLIB$$fa7aa0e4.raiseException(<generated>)
 at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:367)
 at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:270)
 at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
 at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
 at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
 at org.jbpm.graph.def.Node.leave(Node.java:381)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
 at org.jbpm.graph.node.State$$EnhancerByCGLIB$$e0d3d84e.leave(<generated>)
 at org.jbpm.graph.exe.Token.signal(Token.java:194)
 at org.jbpm.graph.exe.Token.signal(Token.java:157)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
 at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$44509b08.signal(<generated>)
 at org.jbpm.job.Timer.execute(Timer.java:93)
 at org.jbpm.scheduler.ejbtimer.ExecuteTimerCommand.execute(ExecuteTimerCommand.java:23)
 at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:90)
 ... 7 more
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.cancelTimersByName(TimerServiceBean_p7ac74_ELOImpl.java:153)
 at org.jbpm.scheduler.ejbtimer.EjbSchedulerService.deleteTimersByName(EjbSchedulerService.java:49)
 at org.jbpm.scheduler.def.CancelTimerAction.execute(CancelTimerAction.java:46)
 at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:255)
 ... 28 more
Caused by: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at weblogic.ejb.container.timer.TimerImpl.cancel(TimerImpl.java:618)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.cancelTimersByName(TimerServiceBean.java:53)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.cancelTimersByName(TimerServiceBean_p7ac74_ELOImpl.java:138)
 ... 31 more
; nested exception is: org.jbpm.JbpmException: couldn't execute org.jbpm.scheduler.ejbtimer.ExecuteTimerCommand@dd5a9d
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeUtils.java:141)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:657)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
 at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:76)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.ejbTimeout(TimerServiceBean.java:95)
 ... 5 more
; nested exception is: org.jbpm.JbpmException: couldn't execute timer
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeUtils.java:141)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:643)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke(BaseLocalObject.java:570)
 at weblogic.ejb.container.internal.TimerDrivenLocalObject.postInvoke(TimerDrivenLocalObject.java:76)
 at weblogic.ejb.container.timer.TimerImpl.timerExpired(TimerImpl.java:395)
 at weblogic.timers.internal.TimerImpl.run(TimerImpl.java:265)
 at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
>

I use the cvs version (3.2.1) of the jbpm-engine.

Anyone an idea about this issue??

[slogger]

Do you try to cancel timer in you delegation action class?

Can you post you proc-definition.xml and source code of action class?

[syngolis]

No ActionDelegation. Just plain JPDL:

<state name="State1: Wait 1 minute">
 <timer name='waitstate' duedate='1 minute' transition='to_task1' />
 <transition name="to_task1" to="Task1: WaitState is over"></transition>
 </state>

(Working under JBoss)

I did a little mor research. The timer becomes executed. The problem appears at the cancelling of the timer:

13:35:13,406 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG TimerServiceBean : ejb timer [
EJB Timer] id: 2 pk: 1 info: org.jbpm.scheduler.ejbtimer.TimerInfo@41fef timer: 1183116913406.195(0) state: 2 ejb: TimerServiceBea
n(Application: ISOWorkflow, EJBComponent: jbpm-enterprise.jar) Thread: Thread[[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.ker
nel.Default (self-tuning)',5,Pooled Threads] fires
13:35:22,078 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG TimerServiceBean : looking up
local command service
Context initial = new InitialContext();
Context environment = (Context) initial.lookup('java:comp/env');
LocalCommandServiceHome localCommandServiceHome = (LocalCommandServiceHome) environment.lookup('ejb/LocalCommandServiceBean');
LocalCommandService localCommandService = localCommandServiceHome.create();
Serializable info = ejbTimer.getInfo();
TimerInfo timerInfo = (TimerInfo) info;
TimerID: 19
Timer timer = (Timer) localCommandService.execute(new ExecuteTimerCommand(timerInfo.getTimerId()));
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG CommandServiceBean : getting j
bpm configuration resource from the environment properties
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG CommandServiceBean : couldn't
find configuration property JbpmCfgResource through JNDI
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG CommandServiceBean : getting d
efault jbpm configuration resource (jbpm.cfg.xml)
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG CommandServiceBean : handing o
ver the command execution to the command service
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG JbpmContextInfo : creating jbp
m context with service factories '[tx, message, scheduler, logging, persistence, authentication]'
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG JbpmContext : creating org.jbp
m.JbpmContext@11b138a
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG CommandServiceBean : executing
 org.jbpm.scheduler.ejbtimer.ExecuteTimerCommand@9ff7c0
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG DbPersistenceServiceFactory :
creating persistence service
13:35:22,093 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG DbPersistenceService : using c
urrent hibernate session SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] dele
tions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[]])
13:35:22,140 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG ExecuteTimerCommand : executin
g timer 19
13:35:22,156 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG GraphElement : event 'before-s
ignal' on 'State(State1: Wait 1 minute)' for 'Token(/)'
13:35:22,156 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG GraphElement : event 'node-lea
ve' on 'State(State1: Wait 1 minute)' for 'Token(/)'
13:35:22,156 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG GraphElement : executing actio
n 'CancelTimerAction(1249338)'
13:35:22,156 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG Token : token[181] is locked b
y token[181]
13:35:22,171 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG EjbSchedulerService : deleting
 timers by name waitstate
13:35:22,171 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG JobSession : deleting timer ti
mer(waitstate,13:15:06,000) by name waitstate
13:35:22,171 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG TimerServiceBean : cancelling
timers with name waitstate from the ejb timer service
13:35:22,171 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG Token : token[181] is unlocked
 by token[181]
13:35:22,187 [[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'] ERROR GraphElement : action threw ex
ception: EJB Exception: ; nested exception is: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from
within ejbTimeout
javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: java.lang.IllegalStateException: Single expir
ation timers cannot be cancelled from within ejbTimeout
java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at weblogic.ejb.container.timer.TimerImpl.cancel(TimerImpl.java:618)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.cancelTimersByName(TimerServiceBean.java:53)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.cancelTimersByName(TimerServiceBean_p7ac74_ELOImpl.java:63)

[kukeltje]

weblogic8 does not officially support the ejb3 spec (afaik) so that might be the reaseon if you use the enterprise version.

Look at WLS 10 that one is compliant

[syngolis]

You are right with weblogic 8, hence i am using Weblogic 9/9.2 which supports at least ejb2.1 and the EJB Timers.

Is the TimerService in jbpm based on EJB3.0? I thought it's 2.1.

Since the Timer functionality of JBPM is based on the J2EE Specs for EJB Timers there shouldn't be a problem to use it in compliant environments.
If I check the logs, the timer is created and it's executed at the right time, but the cancelling does not work.
Even the Node.leave event is fired:

GraphElement : event 'node-leave' on 'State(State1: Wait 1 minute)' for 'Token(/)'

Maybe it has something to do with:

Token : token[181] is locked by token[181]
...
Token : token[181] is unlocked by token[181]

Seems a little bit strange for me?!?

[estaub]

"kukeltje" wrote:
weblogic8 does not officially support the ejb3 spec (afaik) so that might be the reaseon if you use the enterprise version.

Look at WLS 10 that one is compliant

Ronald,

I'm confused... is the JBPM enterprise support dependent on ejb3?
That's surprising, especially since I thought it had to be J2SE 1.4 compatible.

Thanks,
-Ed Staub

[kukeltje]

no.. my bad... I mixed things up. ejb 2.1 is enough

[syngolis]

I tried something else:

I Created a task with timer-repeat:

<timer name="testTimer" duedate="30 seconds" repeat="10 seconds">
 <action name="act" class="de.isogmbh.isoworkflow.action.MessageActionHandler"/>
 </timer>

And the repetition including the timer execution is working fine...As long as the taskinstance is not ended. It seems, that the timer is canceled, but it's not deleted from db.
When I delete the entry in JBPM_JOB table manually, I can proceed with the execution.

Exception after trying to end the taskinstance:

Cjavax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: org.jbpm.JbpmException: couldn't execute de.isogmbh.isoworkflow.c
ore.commands.CloseTaskInstanceCommand@1422b45
org.jbpm.JbpmException: couldn't execute de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand@1422b45
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:92)
at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:61)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.execute(JBPMManagerBean.java:238)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.closeTaskInstance(JBPMManagerBean.java:60)
at de.isogmbh.isoworkflow.core.JBPMManager_der1zk_EOImpl.closeTaskInstance(JBPMManager_der1zk_EOImpl.java:83)
at de.isogmbh.isoworkflow.web.MyTasks_CloseTaskServlet.doGet(MyTasks_CloseTaskServlet.java:77)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:223)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3245)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This
Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:153)
at org.jbpm.scheduler.ejbtimer.EjbSchedulerService.deleteTimersByProcessInstance(EjbSchedulerService.java:55)
at org.jbpm.graph.exe.ProcessInstance.end(ProcessInstance.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.ProcessInstance$$EnhancerByCGLIB$$38ec7dc8.end(<generated>)
at org.jbpm.graph.exe.Token.notifyParentOfTokenEnd(Token.java:331)
at org.jbpm.graph.exe.Token.end(Token.java:303)
at org.jbpm.graph.exe.Token.end(Token.java:253)
at org.jbpm.graph.node.EndState.execute(EndState.java:59)
at org.jbpm.graph.def.Node.enter(Node.java:318)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$f6ee189.enter(<generated>)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:393)
at org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$49b4d7d3.leave(<generated>)
at org.jbpm.graph.exe.Token.signal(Token.java:194)
at org.jbpm.graph.exe.Token.signal(Token.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$bbfd881d.signal(<generated>)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:476)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:390)
at de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand.execute(CloseTaskInstanceCommand.java:28)
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:90)
... 19 more
Caused by: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.timer.TimerImpl.checkAllowedInvoke(TimerImpl.java:758)
at weblogic.ejb.container.timer.TimerImpl.getInfo(TimerImpl.java:684)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean.deleteTimersForProcessInstance(TimerServiceBean.java:70)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:138)
... 59 more
javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: org.jbpm.JbpmException: couldn't execute de.isogmbh.isoworkflow.c
ore.commands.CloseTaskInstanceCommand@1422b45
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:76)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.execute(JBPMManagerBean.java:238)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.closeTaskInstance(JBPMManagerBean.java:60)
at de.isogmbh.isoworkflow.core.JBPMManager_der1zk_EOImpl.closeTaskInstance(JBPMManager_der1zk_EOImpl.java:83)
at de.isogmbh.isoworkflow.web.MyTasks_CloseTaskServlet.doGet(MyTasks_CloseTaskServlet.java:77)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:223)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3245)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: org.jbpm.JbpmException: couldn't execute de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand@1422b45
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:92)
at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:61)
... 18 more
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This
Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:153)
at org.jbpm.scheduler.ejbtimer.EjbSchedulerService.deleteTimersByProcessInstance(EjbSchedulerService.java:55)
at org.jbpm.graph.exe.ProcessInstance.end(ProcessInstance.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.ProcessInstance$$EnhancerByCGLIB$$38ec7dc8.end(<generated>)
at org.jbpm.graph.exe.Token.notifyParentOfTokenEnd(Token.java:331)
at org.jbpm.graph.exe.Token.end(Token.java:303)
at org.jbpm.graph.exe.Token.end(Token.java:253)
at org.jbpm.graph.node.EndState.execute(EndState.java:59)
at org.jbpm.graph.def.Node.enter(Node.java:318)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$f6ee189.enter(<generated>)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:393)
at org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$49b4d7d3.leave(<generated>)
at org.jbpm.graph.exe.Token.signal(Token.java:194)
at org.jbpm.graph.exe.Token.signal(Token.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$bbfd881d.signal(<generated>)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:476)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:390)
at de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand.execute(CloseTaskInstanceCommand.java:28)
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:90)
... 19 more
Caused by: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.timer.TimerImpl.checkAllowedInvoke(TimerImpl.java:758)
at weblogic.ejb.container.timer.TimerImpl.getInfo(TimerImpl.java:684)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean.deleteTimersForProcessInstance(TimerServiceBean.java:70)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:138)
... 59 more
java.rmi.RemoteException: EJB Exception: ; nested exception is:
java.lang.RuntimeException: couldn't execute command
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwRemoteException(EJBRuntimeUtils.java:95)
at weblogic.ejb.container.internal.BaseEJBObject.handleSystemException(BaseEJBObject.java:724)
at weblogic.ejb.container.internal.BaseEJBObject.handleSystemException(BaseEJBObject.java:681)
at weblogic.ejb.container.internal.BaseEJBObject.postInvoke1(BaseEJBObject.java:447)
at weblogic.ejb.container.internal.StatelessEJBObject.postInvoke1(StatelessEJBObject.java:72)
at weblogic.ejb.container.internal.BaseEJBObject.postInvokeTxRetry(BaseEJBObject.java:374)
at de.isogmbh.isoworkflow.core.JBPMManager_der1zk_EOImpl.closeTaskInstance(JBPMManager_der1zk_EOImpl.java:97)
at de.isogmbh.isoworkflow.web.MyTasks_CloseTaskServlet.doGet(MyTasks_CloseTaskServlet.java:77)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:223)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3245)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2003)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1909)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: java.lang.RuntimeException: couldn't execute command
at de.isogmbh.isoworkflow.core.JBPMManagerBean.execute(JBPMManagerBean.java:242)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.closeTaskInstance(JBPMManagerBean.java:60)
at de.isogmbh.isoworkflow.core.JBPMManager_der1zk_EOImpl.closeTaskInstance(JBPMManager_der1zk_EOImpl.java:83)
... 15 more
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: org.jbpm.JbpmException: couldn't execute de.isogmbh.is
oworkflow.core.commands.CloseTaskInstanceCommand@1422b45
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:76)
at de.isogmbh.isoworkflow.core.JBPMManagerBean.execute(JBPMManagerBean.java:238)
... 17 more
Caused by: org.jbpm.JbpmException: couldn't execute de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand@1422b45
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:92)
at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:61)
... 18 more
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This
Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:226)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:671)
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:604)
at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:347)
at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:286)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:153)
at org.jbpm.scheduler.ejbtimer.EjbSchedulerService.deleteTimersByProcessInstance(EjbSchedulerService.java:55)
at org.jbpm.graph.exe.ProcessInstance.end(ProcessInstance.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.ProcessInstance$$EnhancerByCGLIB$$38ec7dc8.end(<generated>)
at org.jbpm.graph.exe.Token.notifyParentOfTokenEnd(Token.java:331)
at org.jbpm.graph.exe.Token.end(Token.java:303)
at org.jbpm.graph.exe.Token.end(Token.java:253)
at org.jbpm.graph.node.EndState.execute(EndState.java:59)
at org.jbpm.graph.def.Node.enter(Node.java:318)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$f6ee189.enter(<generated>)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:393)
at org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$49b4d7d3.leave(<generated>)
at org.jbpm.graph.exe.Token.signal(Token.java:194)
at org.jbpm.graph.exe.Token.signal(Token.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
at org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$bbfd881d.signal(<generated>)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:476)
at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:390)
at de.isogmbh.isoworkflow.core.commands.CloseTaskInstanceCommand.execute(CloseTaskInstanceCommand.java:28)
at org.jbpm.ejb.impl.CommandServiceBean.execute(CommandServiceBean.java:90)
... 19 more
Caused by: javax.ejb.NoSuchObjectLocalException: [EJB:011085]This Timer has either expired or been cancelled and therefore cannot be invoked.
at weblogic.ejb.container.timer.TimerImpl.checkAllowedInvoke(TimerImpl.java:758)
at weblogic.ejb.container.timer.TimerImpl.getInfo(TimerImpl.java:684)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean.deleteTimersForProcessInstance(TimerServiceBean.java:70)
at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.deleteTimersForProcessInstance(TimerServiceBean_p7ac74_ELOImpl.java:138)
... 59 more

[syngolis]

After all...I found a possibillity to solve this problem...Here comes a question for the developers:

The error is thrown in Timerservicebean. First, the EJB Timer becomes cancled in 'cancelTimersByName'. Afterwards method 'deleteTimersForProcessInstance' is called and while executing

TimerInfo timerInfo = (TimerInfo) ejbTimer.getInfo();

an error is thrown (in weblogic not in jboss), because there is no timer object for operation left.

I don't understand this behaviour...so I insert a try...catch block in the second method and all works fine.

Can somebody explain it to me?

Here are the methods (with my 'correction')

public void cancelTimersByName(String timerName, Token token) {
 // TODO make the scanning of timers for cancellation optional by only deleting the timerjobs in the db.
 // of course, the corresponding ejb timer notifications have to be ignored.

log.debug("cancelling timers with name "+timerName+" from the ejb timer service");

 TimerService timerService = sessionContext.getTimerService();

 Iterator iter = timerService.getTimers().iterator();

 while (iter.hasNext()) {
 javax.ejb.Timer ejbTimer = (javax.ejb.Timer) iter.next();
 if (ejbTimer.getInfo() instanceof TimerInfo) {
 TimerInfo timerInfo = (TimerInfo) ejbTimer.getInfo();
 if (timerInfo.matchesName(timerName, token)) {
 ejbTimer.cancel();
 }
 }
 }
}

public void deleteTimersForProcessInstance(ProcessInstance processInstance) {

// TODO make the scanning of timers for cancellation optional by only deleting the timerjobs in the db.
// of course, the corresponding ejb timer notifications have to be ignored.

 log.debug("deleting timers for process instance "+processInstance+" from the ejb timer service");
 TimerService timerService = sessionContext.getTimerService();
 Iterator iter = timerService.getTimers().iterator();

 while (iter.hasNext()) {
 javax.ejb.Timer ejbTimer = (javax.ejb.Timer) iter.next();
 try {
 if (ejbTimer.getInfo() instanceof TimerInfo) {
 TimerInfo timerInfo = (TimerInfo) ejbTimer.getInfo();
 if (timerInfo.matchesProcessInstance(processInstance)) {
 ejbTimer.cancel();
 }
 }
 } catch (Exception e) {
 System.out.println("CATCH!");
 }
}

[sabeur]

Hi guys,
I'm working with Weblogic 10.0 and jbpm-jpdl-3.2.2. I have the same problem. Do you have an idea on how I can fix it?
Thanks a lot in advance.

Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:232)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:861)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:788)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:483)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:421)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.cancelTimersByName(TimerServiceBean_p7ac74_ELOImpl.java:228)
 at org.jbpm.scheduler.ejbtimer.EjbSchedulerService.deleteTimersByName(EjbSchedulerService.java:49)
 at org.jbpm.scheduler.def.CancelTimerAction.execute(CancelTimerAction.java:46)
 at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)
 ... 37 more
Caused by: java.lang.IllegalStateException: Single expiration timers cannot be cancelled from within ejbTimeout
 at weblogic.ejb.container.timer.TimerImpl.cancel(TimerImpl.java:626)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.cancelTimersByName(TimerServiceBean.java:53)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean_p7ac74_ELOImpl.cancelTimersByName(TimerServiceBean_p7ac74_ELOImpl.java:213)
 ... 40 more
; nested exception is: org.jbpm.JbpmException: couldn't execute org.jbpm.scheduler.ejbtimer.ExecuteTimerCommand@96ba55a
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeUtils.java:147)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:847)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:788)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:483)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvokeTxRetry(BaseLocalObject.java:421)
 at org.jbpm.ejb.impl.CommandServiceBean_jdfmx8_ELOImpl.execute(CommandServiceBean_jdfmx8_ELOImpl.java:76)
 at org.jbpm.scheduler.ejbtimer.TimerServiceBean.ejbTimeout(TimerServiceBean.java:95)
 ... 5 more
; nested exception is: org.jbpm.JbpmException: couldn't execute timer
 at weblogic.ejb.container.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeUtils.java:147)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:833)
 at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:788)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke1(BaseLocalObject.java:483)
 at weblogic.ejb.container.internal.BaseLocalObject.postInvoke(BaseLocalObject.java:736)
 Truncated. see log file for complete stacktrace