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 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111704#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...