[jboss-user] [EJB 3.0 Users] - ejbTimeout java.lang.NullPointerException

kyle.bober do-not-reply at jboss.com
Tue Sep 15 12:08:16 EDT 2009 

I have an EJBTimer stateless session bean. I kick of the timer via a JMX bean and all works fine. It is when I restart the JBoss server that I am running into an issue. 

I noticed that when I startup JBoss I receive the following error:


  | 
  | 07:38:22,445 ERROR [GeneralPurposeDatabasePersistencePlugin] Cannot deserialize
  | java.lang.ClassNotFoundException: com.thesearchagency.service.kat.model.KATReportDeleteTimer
  |         at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
  |         at java.security.AccessController.doPrivileged(Native Method)
  |         at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
  |         at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
  |         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
  |         at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
  |         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
  |         at java.lang.Class.forName0(Native Method)
  |         at java.lang.Class.forName(Class.java:247)
  |         at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:292)
  |         at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1119)
  |         at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:798)
  |         at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:441)
  |         at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
  |         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
  |         at java.lang.Class.forName0(Native Method)
  |         at java.lang.Class.forName(Class.java:247)
  |         at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:604)
  |         at org.jboss.invocation.MarshalledValueInputStream.resolveClass(MarshalledValueInputStream.java:109)
  |         at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
  |         at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
  |         at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
  |         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
  |         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
  |         at org.jboss.ejb.txtimer.GeneralPurposeDatabasePersistencePlugin.deserialize(GeneralPurposeDatabasePersistencePlugin.java:434)
  |         at org.jboss.ejb.txtimer.GeneralPurposeDatabasePersistencePlugin.selectTimers(GeneralPurposeDatabasePersistencePlugin.java:275)
  |         at org.jboss.ejb.txtimer.DatabasePersistencePolicy.listTimerHandles(DatabasePersistencePolicy.java:165)
  |         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:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy316.listTimerHandles(Unknown Source)
  |         at org.jboss.ejb.txtimer.EJBTimerServiceImpl.restoreTimers(EJBTimerServiceImpl.java:458)
  |         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:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy329.restoreTimers(Unknown Source)
  |         at org.jboss.as.ejb3.timerservice.JBossTimerServiceFactory.restoreTimerService(JBossTimerServiceFactory.java:118)
  |         at org.jboss.ejb3.stateless.StatelessContainer.lockedStart(StatelessContainer.java:196)
  |         at org.jboss.ejb3.EJBContainer.start(EJBContainer.java:884)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
  |         at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
  |         at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
  |         at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
  |         at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)
  |         at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:109)
  |         at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:70)
  |         at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)
  |         at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)
  |         at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)
  |         at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
  |         at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
  |         at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
  |         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
  |         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:774)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:121)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
  |         at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
  |         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
  |         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
  |         at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
  |         at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
  |         at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
  |         at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
  |         at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)
  |         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
  |         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
  |         at org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)
  |         at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)
  |         at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
  |         at org.jboss.Main.boot(Main.java:221)
  |         at org.jboss.Main$1.run(Main.java:556)
  |         at java.lang.Thread.run(Thread.java:619)
  | 
  | 

When the EJBTimer @Timeout method is called I receive the following error:


  | 
  | 11:53:41,390 DEBUG [KATReportDeleteTimerService] DeleteKATReportsTimerService Timeout ::
  | null
  | 11:53:41,468 ERROR [TimerImpl] Error invoking ejbTimeout
  | java.lang.NullPointerException
  | 	at com.thesearchagency.service.kat.impl.KATReportDeleteTimerService.deleteExpiredKATReports(KATReportDeleteTimerService.java:92)
  | 	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.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
  | 	at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
  | 	at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
  | 	at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
  | 	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.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
  | 	at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_4373267.invoke(InvocationContextInterceptor_z_fillMethod_4373267.java)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
  | 	at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_4373267.invoke(InvocationContextInterceptor_z_setup_4373267.java)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.tx.StatelessBMTInterceptor.handleInvocation(StatelessBMTInterceptor.java:106)
  | 	at org.jboss.ejb3.tx.BMTInterceptor.invoke(BMTInterceptor.java:55)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:80)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:249)
  | 	at org.jboss.as.ejb3.timerservice.TimedObjectInvokerBridge.callTimeout(TimedObjectInvokerBridge.java:44)
  | 	at org.jboss.ejb.txtimer.TimerImpl$TimerTaskImpl.run(TimerImpl.java:561)
  | 	at java.util.TimerThread.mainLoop(Timer.java:512)
  | 	at java.util.TimerThread.run(Timer.java:462)
  | 
  | 
  | 

Any help here would be much appreciated!

Thanks,
Kyle

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