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IT28993: MQ 5.3 FOR HP-NSS: APPLICATION CANNOT RECONNECT TO QUEUE MANAGER AFTER CPU GOES DOWN - 2059 RC ON MQCONN RETRY

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APAR status

  • Closed as program error.

Error description

  • Applications cannot reconnect to the queue manager after
    a CPU down in very rare cases at all. The error 2059 is
    reported on every MQCONN retry.
    .
    FDCs may be thrown constantly like below:
    .
     Probe Id          :- XY077002
     Component         :- xtrGetTraceLock
     Major Errorcode   :- xecF_E_UNEXPECTED_SYSTEM_RC
     Minor Errorcode   :- OK
     Probe Type        :- MSGAMQ6119
     Probe Severity    :- 2
     Probe Description :- AMQ6119: An internal WebSphere MQ
                          error has occurred (Guardian error
                          initializing Trace Lock)
     Arith1            :- 48 30
     Comment1          :- Guardian error initializing Trace Lock
     Comment2          :- FILE_OPEN_
     -----------------------------------------------------------
     MQM Function Stack
     MQCONN
     zstMQCONN
     xcsInitialize
     xcsFFST
    

Local fix

Problem summary

  •  Applications cannot reconnect to the queue
    manager after a CPU down in rare cases at all. The
    error 2059 is reported on every MQCONN retry.
    The error is caused when the application is in the call MQDISC
    and at the same time a CPU down event is executed on the CPU
    of the primary disc process. The selected primary disc process
    is the one that operates on the file LnSTRACEX from the queue
    manager Guardian installation volume , which is also opened
    by the application (see PSTATE opened files).
    

Problem conclusion

  •  CPU down handling has been improved.
    

Temporary fix

  •  Restart the application that cannot reconnect.
    

Comments

APAR Information

  • APAR number

    IT28993

  • Reported component name

    WEBS MQ NSS ITA

  • Reported component ID

    5724A3902

  • Reported release

    531

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-04-30

  • Closed date

    2019-05-15

  • Last modified date

    2019-05-15

  • 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 MQ NSS ITA

  • Fixed component ID

    5724A3902

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ5M","label":"APAR"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
15 May 2019