IBM Support

IT26428: FDCs with probe IDs XC332010 and KN107001 when MQGET wait interval exceeds 1000000000 ms

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APAR status

  • Closed as program error.

Error description

  • An application connected using MQCNO_FASTPATH_BINDING and
    calling MQGET using a wait interval exceeding
    1000000000 milliseconds  (just over 11.5 days) generates FDCs
    with
    Probe Id XC332010 and KN107001 with:
    
              Component  :- kqiWaitForABit
      Major Errorcode   :- xecF_E_UNEXPECTED_RC
      Major Errorcode   :- xecL_E_INVALID_PARAM
    

Local fix

  • Using MQWI_UNLIMITED instead of any value over a billion
    milliseconds avoids the FDCs.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of FASTPATH applications which specify unusually large
    MQGMO WaitInterval values who have applied a fix for APAR
    IT22173 may be affected by this problem.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    This problem was caused by validation code added under APAR
    IT22173.
    

Problem conclusion

  • The fix for IT22173 comprised of the validation code and a check
    for EINVAL from a futex syscall.  The validation code is not
    necessary for the fix to be considered complete and so has been
    removed.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.12
    v9.0 LTS   9.0.0.6
    v9.1 CD    9.1.2
    v9.1 LTS   9.1.0.2
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT26428

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-09-26

  • Closed date

    2019-01-11

  • Last modified date

    2019-01-11

  • 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

    IBM MQ BASE MP

  • Fixed component ID

    5724H7251

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
11 January 2019