Unable to deploy EJB - NullPointerException

Question

Hello,
We are migrating our application from WebLogic 8.1 to WebLogic 10.0.
We changed the deployment descriptors according WL 10.0 specs. The application deploys and activates seamlessly. The problem comes when we try to start it (for "Servicing all requests"):
<Error> <Deployer> <BEA-149265> <Failure occurred in the execution of deployment request with ID '1191253811043' for task '12'. Error is: 'weblogic.application.ModuleException: Exception activating module: EJBModule(persistence.jar)
Unable to deploy EJB: ReportParameterBean from persistence.jar:
null
weblogic.application.ModuleException: Exception activating module: EJBModule(persistence.jar)
Unable to deploy EJB: ReportParameterBean from persistence.jar:
null
at weblogic.ejb.container.deployer.EJBModule.activate(EJBModule.java:440)
at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:107)
at weblogic.application.internal.flow.DeploymentCallbackFlow$2.next(DeploymentCallbackFlow.java:381)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.activate(DeploymentCallbackFlow.java:71)
Truncated. see log file for complete stacktrace
java.lang.NullPointerException
at weblogic.ejb.container.cmp.rdbms.RDBMSPersistenceManager.setupParentBeanManagers(RDBMSPersistenceManager.java:1904)
at weblogic.ejb.container.deployer.CMPInfoImpl.setupParentBeanManagers(CMPInfoImpl.java:326)
at weblogic.ejb.container.deployer.EJBDeployer.activate(EJBDeployer.java:1382)
at weblogic.ejb.container.deployer.EJBModule.activate(EJBModule.java:423)
at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:107)
Truncated. see log file for complete stacktrace
>
<Error> <Deployer> <BEA-149202> <Encountered an exception while attempting to commit the 7 task for the application 'tms'.>
<Warning> <Deployer> <BEA-149004> <Failures were detected while initiating start task for application 'tms'.>
<Warning> <Deployer> <BEA-149078> <Stack trace for message 149004
weblogic.application.ModuleException: Exception activating module: EJBModule(persistence.jar)
Unable to deploy EJB: ReportParameterBean from persistence.jar:
null
at weblogic.ejb.container.deployer.EJBModule.activate(EJBModule.java:440)
at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:107)
at weblogic.application.internal.flow.DeploymentCallbackFlow$2.next(DeploymentCallbackFlow.java:381)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.activate(DeploymentCallbackFlow.java:71)
Truncated. see log file for complete stacktrace
java.lang.NullPointerException
at weblogic.ejb.container.cmp.rdbms.RDBMSPersistenceManager.setupParentBeanManagers(RDBMSPersistenceManager.java:1904)
at weblogic.ejb.container.deployer.CMPInfoImpl.setupParentBeanManagers(CMPInfoImpl.java:326)
at weblogic.ejb.container.deployer.EJBDeployer.activate(EJBDeployer.java:1382)
at weblogic.ejb.container.deployer.EJBModule.activate(EJBModule.java:423)
at weblogic.application.internal.flow.ModuleListenerInvoker.activate(ModuleListenerInvoker.java:107)
Truncated. see log file for complete stacktrace
>
The application worked just fine on WL 8.1. There are no changes in the code. The changes in the deployment descriptors are the minimum required to deploy the application on WL 10.0.
Any idea what can be the reason for this error?

Answer 1

Hello auspost_simon,
Thank you for your answer.
We always compile our project with Sun's Java (JDK) compiler. Up to now our application had to be compatible with other app.servers and we used only the WL Builder tool from v.8.1 to build the specific deployment descriptors. We searched for a similar tool in WL 10.0 but we didn't managed to find one.
We tried the migration tools supplied with WL 10.0 to migrate the deployment descriptors. The result of the EAR (EJB) with the migrated DDs is the same as the demonstrated.
Please be more specific - what do you mean by "WL 10.0 compilers and builders"? To be honest we are migrating to WL 10.0 on the fly - we have almost no time to read the docs, so any clue on "WL 10.0 compilers and builders" is appreciate.