Spaces Managed Servers will not Start Correctly all the Time After Upgrading from 11g to 12c with Logs Showing Error "java.lang.ClassCastException: oracle.webcenter.portal.persistence.entity.PortalEntityObject" (Doc ID 2454514.1)

Last updated on JULY 20, 2022

Applies to:

Symptoms

WebCenter Portal managed servers do not start correctly all the time after upgrading from 11g to 12c.

Users will get a blank page when accessing WebCenter Portal.

Symptoms:

• WebCenter Portal managed server is not starting correctly all the time.
  
  
• Sometimes the managed server starts properly and users can connect to WebCenter Portal.
  But other times the managed server shows the following errors just after startup and a blank page is displayed when accessing WebCenter Portal:
  
  <TIMESTAMP> <Notice> <Stdout> <BEA-000000> <
  java.lang.IllegalArgumentException: Unknown Entity bean class: class oracle.webcenter.portal.persistence.entity.PortalEntityObject, please verify that this class has been marked with the @Entity annotation.
  at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:718)
  at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:622)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  ...
  <TIMESTAMP> <Notice> <Stdout> <BEA-000000> <Exception in cinit
  java.lang.ClassCastException: oracle.webcenter.portal.persistence.entity.PortalEntityObject cannot be cast to oracle.webcenter.portal.persistence.entity.PortalEntityObject
  at oracle.webcenter.portal.persistence.impl.entitymanager.SwitchingTypedQuery.getSingleResult(SwitchingTypedQuery.java:63)
  at oracle.webcenter.portal.persistence.impl.entitymanager.SwitchingTypedQuery.getSingleResult(SwitchingTypedQuery.java:20)
  at oracle.webcenter.portal.persistence.impl.entitymanager.PortalEntityObjectManagerImpl.findPortalEntityObjectByNamespaceAndName(PortalEntityObjectManagerImpl.java:182)
  at oracle.webcenter.portal.persistence.impl.entitymanager.PortalEntityObjectManagerImpl$Proxy$_$$_WeldClientProxy.findPortalEntityObjectByNamespaceAndName(Unknown Source)
  at oracle.webcenter.portal.persistence.impl.PersistenceManagerImpl.findByName(PersistenceManagerImpl.java:253)
  ...

  <TIMESTAMP> <Notice> <Stdout> <BEA-000000> <stServletFilter$1.call(PortalRequestServletFilter.java:48)
  at oracle.webcenter.portal.context.impl.PortalRequestExecutorImpl.execute(PortalRequestExecutorImpl.java:47)
  at oracle.webcenter.portal.context.impl.PortalRequestServletFilter.doFilter(PortalRequestServletFilter.java:47)
  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
  ...

  <TIMESTAMP> <Error> <HTTP> <BEA-101107> <[ServletContext@1761653129[app:webcenter module:/webcenter path:null spec-version:3.1]] Problem occurred while serving the error page.
  java.lang.ExceptionInInitializerError
  at oracle.webcenter.framework.view.support.impl.DeviceSupportImpl.getDeviceByUserAgent(DeviceSupportImpl.java:403)
  at oracle.webcenter.framework.view.support.DeviceAgent.getDevice(DeviceAgent.java:292)
  at oracle.webcenter.framework.view.support.DeviceAgent.getDeviceGroups(DeviceAgent.java:319)
  ...

  Caused By: java.lang.RuntimeException: java.lang.ClassCastException: oracle.webcenter.portal.persistence.entity.PortalEntityObject cannot be cast to oracle.webcenter.portal.persistence.entity.PortalEntityObject
  at oracle.webcenter.framework.view.support.impl.DeviceSupportUtils.<clinit>(DeviceSupportUtils.java:231)
  at oracle.webcenter.framework.view.support.impl.DeviceSupportImpl.getDeviceByUserAgent(DeviceSupportImpl.java:403)
  at oracle.webcenter.framework.view.support.DeviceAgent.getDevice(DeviceAgent.java:292)
  ...

  Caused By: java.lang.ClassCastException: oracle.webcenter.portal.persistence.entity.PortalEntityObject cannot be cast to oracle.webcenter.portal.persistence.entity.PortalEntityObject
  at oracle.webcenter.portal.persistence.impl.entitymanager.SwitchingTypedQuery.getSingleResult(SwitchingTypedQuery.java:63)
  at oracle.webcenter.portal.persistence.impl.entitymanager.SwitchingTypedQuery.getSingleResult(SwitchingTypedQuery.java:20)
  at oracle.webcenter.portal.persistence.impl.entitymanager.PortalEntityObjectManagerImpl.findPortalEntityObjectByNamespaceAndName(PortalEntityObjectManagerImpl.java:182)
  at oracle.webcenter.portal.persistence.impl.entitymanager.PortalEntityObjectManagerImpl$Proxy$_$$_WeldClientProxy.findPortalEntityObjectByNamespaceAndName(Unknown Source)
  at oracle.webcenter.portal.persistence.impl.PersistenceManagerImpl.findByName(PersistenceManagerImpl.java:253)

• When issue reproduces the users get a blank page when attempting to connect to WebCenter Portal and the following error is seen in the log:
  
  <TIMESTAMP> <Notice> <Stdout> <BEA-000000> <<BEA-000000> <
  java.lang.IllegalArgumentException: Unknown Entity bean class: class oracle.webcenter.portal.persistence.entity.PortalEntityObject, please verify that this class has been marked with the @Entity annotation.
  at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:718)
  at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:622)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  ...
  <TIMESTAMP> <Error> <HTTP> <BEA-101107> <[ServletContext@851971315[app:webcenter module:/webcenter path:null spec-version:3.1]] Problem occurred while serving the error page.
  java.lang.NoClassDefFoundError: Could not initialize class oracle.webcenter.framework.view.support.impl.DeviceSupportUtils
  at oracle.webcenter.framework.view.support.impl.DeviceSupportImpl.getDeviceByUserAgent(DeviceSupportImpl.java:403)
  at oracle.webcenter.framework.view.support.DeviceAgent.getDevice(DeviceAgent.java:292)
  at oracle.webcenter.framework.view.support.DeviceAgent.getDeviceGroups(DeviceAgent.java:319)