PM86354: WMQ Z/OS V7.1.0: KAINT(N), WHERE N IS AN INTEGER, IS NOT HONORED FOR A SVRCONN CHANNEL AND RESULTS IN KAINT(0)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An environment has TCPKEEP (YES) in the QMGR definition and a
  SVRCONN with HBINT (300) and KAINT (360).  When the client
  channel starts, the CHSTATUS in the CSQOREXX panels shows a 0
  value for Keep Alive Interval rather than the specified
  integer. MQSC commands and the MQ Explorer also show the zero
  value. A WMQ 7.0.1 queue manager correctly displays the Keep
  Alive Interval in the channel status.
  .
  Additional symptoms:
  Technote 1566516 advises having the keepalive interval set
  less than the timeout interval on a firewall. Due to the error
  described in this APAR, the keepalive packets will not be sent
  for 2 hours by default, by which time a firewall may have
  timed out the connection.  CSQX259E results.
  .
  If the SVRCONN has SHARECNV>0, heartbeat packets could keep
  the firewall from timing out the channel.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: The KAINT attribute may not be set      *
  *                      correctly for SVRCONN channels.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When specifying a KAINT channel attribute for SVRCONN channels,
  or using the AUTO option, the KeepAlive interval value may not
  take effect at channel start time as intended.
  
  Issuing a DISPLAY CHSTATUS command for an active SVRCONN may
  show that the effective value for the active channel is 0.
  

Problem conclusion

• Processing has been amended to ensure that the KAINT channel
  attribute is set correctly for SVRCONN channels.
  100Y
  CMQXRMSA
  

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:

  UK94956

Modules/Macros

• CMQXRMSA
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UK94956

     UP13/07/24 P F307

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.