IBM Support

IT32258: Memory leak in the amqzlaa0 process when the queue manager is processing MQSUBRQ call for a retained publication

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APAR status

  • Closed as program error.

Error description

  • An increase in memory consumption maybe seen from the amqzlaa0
    process if the queue manager is processing MQSUBRQ call for a
    "retained publication".
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of retained publications.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    While preparing a message for sending to a subscriber, a few
    hundred bytes of memory is leaked.
    

Problem conclusion

  • The MQ code has been corrected to ensure that the memory is
    returned to the system when no longer needed.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.16
    v9.0 LTS   9.0.0.11
    v9.1 CD    TBC.
    v9.1 LTS   9.1.0.6
    
    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

    IT32258

  • 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

    2020-03-22

  • Closed date

    2020-05-01

  • Last modified date

    2020-05-01

  • 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"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
02 May 2020