PM28429: BUFFEROVERFLOWEXCEPTION WHEN WEBSPHERE SERVICE INTEGRATION BUS V7.0 ATTEMPTS TO SEND MESSAGES TO WEBSPHERE MQ

7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• When the WebSphere Service Integration Bus v7.0 attempts to
  send messages to a WebSphere MQ Queue using MQLink, a
  BufferOverflowException occurs and messages remain
  in "pending send" state on the MQLinkSender channel
  transmitter and do not arrive on the MQ Queue.
  
  The Following FFDC is produced:
  FFDC Exception:java.nio.BufferOverflowException SourceId:
  com.ibm.ws.sib.processor.impl.AsynchConsumer.processMsgs
  ProbeId:1:124:1.37 Reporter:com.ibm.ws.sib.processor.impl.
  AsynchConsumer@4cca4cca
  java.nio.BufferOverflowException
  at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:165)
  at com.ibm.ws.sib.mfp.mqinterop.impl.BufferedHeader.write
  (BufferedHeader.java:734)
  at com.ibm.ws.sib.mfp.mqinterop.impl.BufferedHeader.write
  (BufferedHeader.java:699)
  at com.ibm.ws.sib.mfp.impl.MQJsApiMessageEncoderImpl.encode
  ForMQLink(MQJsApiMessageEncoderImpl.java:451)
  at com.ibm.ws.sib.comms.mq.util.MQFap.encodeMessage(MQFap.
  java:1273)
  at com.ibm.ws.sib.comms.mq.link.MQLinkSender.convertSIBus
  MessageToMQMessage(MQLinkSender.java:975)
  at com.ibm.ws.sib.comms.mq.link.MQLinkSender.doMessage
  Transfer(MQLinkSender.java:2710)
  at com.ibm.ws.sib.comms.mq.link.MQLinkSender.consume
  Messages(MQLinkSender.java:1686)
  at com.ibm.ws.sib.processor.impl.AsynchConsumer.process
  Msgs(AsynchConsumer.java:113)
  at com.ibm.ws.sib.processor.impl.JSLocalConsumerPoint.
  processQueuedMsgs(JSLocalConsumerPoint.java:2695)
  at com.ibm.ws.sib.processor.impl.JSLocalConsumerPoint.
  runAsynchConsumer(JSLocalConsumerPoint.java:3299)
  at com.ibm.ws.sib.processor.impl.JSLocalConsumerPoint$
  AsynchThread.run(JSLocalConsumerPoint.java:3588)
  at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.
  java:1550)
  

Local fix

• Restart the MQLinkSender Channel
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of the default messaging provider     *
  *                  for IBM WebSphere Application Server using  *
  *                  the MQLink                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: Messages been transmitted over the      *
  *                      MQLink stop being sent. The MQLink      *
  *                      Sender Channel Transmitter shows the    *
  *                      messages in 'Pending Send' state        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem occured when the messages were being sent over a
  secure SSL connection to an IBM WebSphere MQ Server via the
  MQLink. For this problem to occur, the sender channel must
  become inactive due to no activity on the channel at least 8
  times during the running of the MQLink. Once this limit is
  reached then messages would stop being sent over the MQLink and
  would remain in Pending Send state on the channel.
  

Problem conclusion

• This problem has been fixed.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 7.0.0.17.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

• Stop and Start the MQLink manually.
  

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

  PLAT MSG COM

• Fixed component ID

  620800101

Applicable component levels

• R300 PSY

     UP