IBM Support

IV67181: Queue manager with many XAResourceManager stanzas reports XC130004 FDC and fails to start

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • A queue manager with many XAResourceManager stanzas reports
    XC130004 FDC and fails to start.
    
    The XC130004 FDC reports a SIGSEGV and this function stack:
    
    MQM Function Stack
    ExecCtrlrMain
    zxcCreateECResources
    zutReadQMIniFile
    xcsBrowseIniCallback
    zutQMIniCallback
    tmxXAResourceManagerCB
    xcsFFST
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This problem has only been reported from a queue manager with an
    extremely large number of XAResourceManager stanzas (over 80
    stanzas).
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    While parsing and validating the contents of the
    XAResourceManager stanzas in the qm.ini file, a pointer was used
    that was not certain to point to the right piece of memory.
    

Problem conclusion

  • The programming error has been found and corrected.
    
    A note is added to the IBM MQ Knowledge Center mentioning that
    there is a hard limit of 255 on the allowed number of
    XAResourceManager stanzas. However, this is not a realistic
    scenario to attempt, and we do not recommend trying to configure
    a large number of stanzas. Only a small number of stanzas is
    expected. Only a small number of stanzas will give reasonable
    transaction performance.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.1       7.1.0.7
    v7.5       7.5.0.5
    v8.0       8.0.0.2
    
    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

    IV67181

  • Reported component name

    WMQ LIN X86-64

  • Reported component ID

    5724H7230

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-11-21

  • Closed date

    2014-11-27

  • Last modified date

    2014-11-27

  • 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

    WMQ LIN X86-64

  • Fixed component ID

    5724H7230

Applicable component levels

  • R710 PSY

       UP

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1"}]

Document Information

Modified date:
09 March 2021