IBM Support

IT26650: FDC with probe ID XC130031 and access violation reported when putting to queue manager's DEFXMITQ with activity trace enabled

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APAR status

  • Closed as program error.

Error description

  • When opening a queue manager's DEFXMITQ on an MQ Queue Manager
    that has activity trace enabled, a failure data capture (FDC)
    record is generated, reporting SIGSEGV or access violation
    occurs and the activity trace is not be written.
    

Local fix

  • Disabling activity trace will stop the FDCs from being
    generated.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users who have a configuration which opens a defined DEFXMITQ on
    their Queue Manager and have activity trace enabled.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    In the MQ queue resolution routines, if the specified queue
    cannot be resolved to its target queue manager, the DEFXMITQ (if
    defined)is used to hold the message. When opening this queue, if
    Activity Trace was enabled, an FDC record would be written due
    to an Access Violation on the Queue Manager.
    

Problem conclusion

  • The code has been updated so the access violation no longer
    occurs in this scenario.
    
    ---------------------------------------------------------------
    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

    IT26650

  • 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

    2018-10-17

  • Closed date

    2019-01-03

  • Last modified date

    2019-01-03

  • 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:
03 January 2019