PM93166: WMQ Z/OS 7.0.1: CLIENT CHANNEL DOES NOT NEED TO ACCESS THE SYNCQ

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Client channel does not need to access the SYNCQ.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: SVRCONN connections unnecessarily       *
  *                      access the SYSTEM.CHANNEL.SYNCQ queue   *
  *                      in order to check the sequence number.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When a SVRCONN channel starts, function rrxReadChannelDef calls
  rrxReadResetRec to obtain the sequence number for the channel.
  It obtains the sequence number by doing an MQGET on the
  SYSTEM.CHANNEL.SYNCQ queue (which you can see from the SMF
  statistics). SVRCONN channels do not use sequence numbers,
  however, so this call is unnecessary.
  

Problem conclusion

• rrxReadChannelDef no longer calls rrxReadResetRec if the
  channel being started is a SVRCONN.
  010Y
  CSQXRCDF
  

Temporary fix

Comments

APAR Information

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

  PM70817

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

  UK96205

Modules/Macros

• CSQXRCDF
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK96205

     UP13/09/27 P F309

Fix is available

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