IBM Support

IT34127: Additional diagnostics to investigate a SIGSEGV error reported by an amqrmppa process

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APAR status

  • Closed as program error.

Error description

  • IBM support investigated a SIGSEGV memory error originating from
    a queue manager which was servicing asynchronous consume
    requests. The failure data capture (FDC) record which was
    generated in this scenario lacked some internal information
    which would have benefitted the support team's investigation.
    This APAR enhances the internal information dumped in this
    scenario to strengthen diagnostic capability.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All IBM MQ users using asynchronous message consumers.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    Additional diagnostic added to the asynchronous consume code to
    help with the investigation of a SIGSEGV exception in this area
    of code.
    

Problem conclusion

  • The code has been to modified to capture additional diagnostic
    when the error occurs.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v9.2 LTS   9.2.0.1
    v9.x CD    9.2.1
    
    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

    IT34127

  • Reported component name

    MQ APPL M2002 V

  • Reported component ID

    5737H4701

  • Reported release

    920

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-09-06

  • Closed date

    2020-09-24

  • Last modified date

    2020-11-19

  • 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

    MQ APPL M2002 V

  • Fixed component ID

    5737H4701

Applicable component levels

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"920"}]

Document Information

Modified date:
25 March 2021