PH04844: JAVASSIST USED BY THE APPLICATION IS COLLIDED WITH JAVASSIST VERSION USED BY CDI

8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• The application failed to start when it attempts to use its own
  version of javassist. It collides with the version of javassist
  used by CDI.  The below error is seen in the SystemOut.log:
  
  
   java.lang.ClassCastException:
  org.omnifaces.VetoAnnotatedTypeExtension_$$_javassist_0
  incompatible with javassist.util.proxy.ProxyObject
  at
  org.apache.webbeans.proxy.JavassistProxyFactory.createNormalScop
  edBeanProxy(JavassistProxyFactory.java:225)
  at
  org.apache.webbeans.container.BeanManagerImpl.getReference(BeanM
  anagerImpl.java:943)
  at
  org.apache.webbeans.event.ObserverMethodImpl.notify(ObserverMeth
  odImpl.java:279)
  

Local fix

• Upgrade WebSphere Application Server to version 9.0
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Using javassist as an application       *
  *                      libaray causes ClassCastException       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When used inside as an application libary javassit clashes
  with the version of javassist packaged by open webbeans
  causing a ClassCastException.
  

Problem conclusion

• There is no solution to prevent javassist clashing when used
  in an application libary, but the javassist version shipped
  with websphere was updated so it could be more easily used in
  customer applications
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.15.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R850 PSY

     UP