IBM Support

SE72648: Agent process AMQZLAA0 MCH6902

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APAR status

  • Closed as program error.

Error description

  • Agent job  AMQZLAA0  may see "MCH6902 The requested heap space
    operation is invalid"
    in certain circumstances.  This error will end the agent job
    and possibly crash the Manager.
    XY353001  HALT6901
    MQM Function Stack:
    zlaMainThread
    kpiTerminate
    apiTerminate
    xcsFFST
    
    .JOB file/joblog  list module name: AMQAPIIA_R  program name:
    LIBMQML_R
    
    Execution control job AMQZXMA0 should FDC
    ZX005035      zxcProcessChildren
    zrcX_AGENT_DEAD AMQMSG5009
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    IBMi MQ users.
    
    
    Platforms affected:
    IBM iSeries
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    IBM i system journal API requires using the single level
    storage, MQ code doesn't deal with the memory properly which may
    hit MCH6902 error message when system out of memory.
    

Problem conclusion

  • MQ code is changed to properly deal with the single level
    storage memory for journal which avoid the MCH6902 error
    message.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.15
    v9.0 LTS   9.0.0.9
    v9.1 CD    9.1.5
    v9.1 LTS   9.1.0.5
    
    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

    SE72648

  • Reported component name

    IBM MQ ISERIES

  • Reported component ID

    5724H7274

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-12-10

  • Closed date

    2020-01-05

  • Last modified date

    2020-03-10

  • 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 ISERIES

  • Fixed component ID

    5724H7274

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":"910","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
10 March 2020