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IZ52214: QUEUE MANAGER PROCESSES THAT ACCESS CHANNEL STATUS TABLE FAIL WHEN MaxChannels VALUE IS VERY HIGH

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APAR status

  • Closed as program error.

Error description

  • Typically error AMQ9522 with error code 545284153(0x20806039 -
    xecS_E_TOO_BIG) will be logged in the error log and in some
    cases accompanied by FDC with probe RM241000 and error
    rrcE_STATUS_TABLE_ERROR.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users setting very high value for MaxChannels in V6 and V7.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    The queue manager calculates the Status table size based on the
    value set for the MaxChannels. When this value was very large,
    the queue manager tried to allocate large amount of memory
    for the channel status table. The attempt to allocate memory
    for a large channel status table failed, resulting in the
    AMQ9522 error.
    

Problem conclusion

  • Appropriate code changes have been made to restrict the
    MaxChannels to 65535 which is the maximum as per design.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v6.0
    Platform           Fix Pack 6.0.2.8
    --------           --------------------
    Windows            U200309
    AIX                U825517
    HP-UX (PA-RISC)    U824678
    HP-UX (Itanium)    U825875
    Solaris (SPARC)    U825511
    Solaris (x86-64)   U825872
    iSeries            tbc_p600_0_2_8
    Linux (x86)        U825181
    Linux (x86-64)     U825874
    Linux (zSeries)    U825516
    Linux (Power)      U825182
    Linux (s390x)      U825873
    
                       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

    IZ52214

  • Reported component name

    WMQ LIN X86 V6

  • Reported component ID

    5724H7204

  • Reported release

    601

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-05-28

  • Closed date

    2009-06-15

  • Last modified date

    2009-06-15

  • 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 V6

  • Fixed component ID

    5724H7204

Applicable component levels

  • R601 PSY

       UP

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Document Information

Modified date:
15 June 2009