PK49927: SEQUENCE ERRORS OCCUR WHEN NPMSPEED OF FAST IS SET ON MQLINK SENDER AND NORMAL SPEED ON MQ RECEIVER

Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR10 Cumulative Fix for WebSphere Application Server
6.1.0.31: Java SDK 1.5 SR11 FP1 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.29: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• This is a simmilar problem as in APAR PK09766. In this case sequ
  ence errors occur when NPM spead is set to FAST on MQLINK sender
  and normal on MQ receiver.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of the default messaging provider in   *
  *                 WebSphere Application Server V6, using a     *
  *                 WebSphere MQ link to interconnect a          *
  *                 service integration bus and a WebSphere MQ   *
  *                 queue manager.                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Messages stop flowing from the service  *
  *                      integration bus to the queue manager.   *
  *                      CWSIC3011E messages are seen in the     *
  *                      application server logs.                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The following message is seen in the application server logs:
  
  CWSIC3011E: The WebSphere MQ link LINKNAME and the remote queue
  manager do not agree on the next message sequence number.  A
  message with sequence number 25 has been sent when sequence
  number 29 was expected.
  
  This problem occurs when the nonpersistent message speed
  (NPMSPEED) property on the receiver channel of the queue manager
  is set to NORMAL, and the nonpersistent message speed on the
  WebSphere MQ link is left at the default value of FAST.
  
  The negotiation of nonpersistent message speed between the
  WebSphere MQ Link sender channel and the queue manager receiver
  was incorrect. This caused the queue manager to use a
  nonpersistent message speed of normal, while the WebSphere MQ
  link used a nonpersistent message speed of fast.
  When nonpersistent messages were sent down this channel, the
  sequence numbers saved by the WebSphere MQ Link and the queue
  manager became out of synchronization.
  

Problem conclusion

• This APAR resolves the problem.
  If CWSIC3011E messages were observed before applying this APAR,
  it is necessary to reset the WebSphere MQ Link sender channel
  before it can be restarted.
  
  Note that there may be other causes of CWSIC3011E errors,
  this APAR only fixes the case where the cause is the
  non-matching NPMSPEED settings.
  

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

  PLAT MSG COM

• Fixed component ID

  620400101

Applicable component levels

• R100 PSY

     UP