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IC59285: Agent process termination due to memory leak from kpimqgetm

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APAR status

  • Closed as program error.

Error description

  • In publisher/subscriber environments with persistent messages,
    the agent process memory usage increases with every get API call
    and the agent terminates once its memory footprint reaches the
    process memory limits specified by the operating system.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All MQ pub/sub users.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    When the kpiMQGETM function called as a part of get API fails
    with informational return code lrcI_TRANSACTIONAL_NEXT, it
    leaves the application properties structure unreleased. This
    causes agent process to leak memory which subsequently results
    in the agent process termination.
    

Problem conclusion

  • MQ code has been modified to avoid the memory leak from agent
    process.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.0
    --------           --------------------
    Windows            U200306
    AIX                U823774
    HP-UX (PA-RISC)    U823665
    HP-UX (Itanium)    U823667
    Solaris (SPARC)    U823772
    Solaris (x86-64)   U824344
    iSeries            tbc_p700_0_1_0
    Linux (x86)        U823664
    Linux (x86-64)     U823773
    Linux (zSeries)    U823668
    Linux (Power)      U823666
    
    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

    IC59285

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-12-18

  • Closed date

    2009-02-11

  • Last modified date

    2009-02-11

  • 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 WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R700 PSY

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Document Information

Modified date:
11 February 2009