PH09666: JAVA.LANG.NOCLASSDEFFOUNDERROR: COM/IBM/MQ/MQXAQUEUEMANAGER MAY OCCUR WHEN USING MQ QUEUES IN WEBSPHERE APPLICATION SERVER

9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3

APAR status

• Closed as program error.

Error description

• When using MQ in WebSphere Application Server v9 it could be
  possible that you are getting the following kind of exception at
  runtime, when mesasges will be picked up from a queue:
  
  java.lang.NoClassDefFoundError: com/ibm/mq/MQXAQueueManager
  
  
  Example:
  [3/5/19 20:04:47:680 UTC] 000000d0 SibMessage E [:] CWSIP0002E:
  An internal messaging error occurred in
  com.ibm.ws.sib.processor.impl.mqproxy.RMQSessionManager,
  1:608:1.46,
  com.ibm.ws.sib.processor.impl.exceptions.RMQResourceException:
  CWSIP0002E: An internal messaging error occurred in
  com.ibm.ws.sib.processor.impl.mqproxy.RMQSessionManager,
  1:333:1.46,
  com.ibm.ws.sib.remote.mq.exceptions.CorruptRMQSessionException:
  CWSJP0024E: A Websphere MQ error was encountered when using the
  Websphere MQ queue manager MQ-Test_Bus:
  java.lang.NoClassDefFoundError: com/ibm/mq/MQXAQueueManager
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server MQ messaging queues                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: JAVA.LANG.NOCLASSDEFFOUNDERROR:         *
  *                      COM/IBM/MQ/MQXAQUEUEMANAGER MAY OCCUR   *
  *                      WHEN USING MQ QUEUES IN WEBSPHERE       *
  *                      APPLICATION SERVER                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  JAVA.LANG.NOCLASSDEFFOUNDERROR:
  COM/IBM/MQ/MQXAQUEUEMANAGER MAY OCCUR
  WHEN USING MQ QUEUES IN WEBSPHERE
  APPLICATION SERVER. This is due to the clarification of the
  API provided by MQ as utilised by Websphere Application Server
  in 9.x.
  

Problem conclusion

• The fix corrects the class name of the API used by
  Websphere Application Server, thus avoiding the
  NoClassDefFoundError.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 9.0.5.1.  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

• R900 PSY

     UP