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IV43114: BUFFER OVERRUN WHEN USING KHD_TOTAL_HIST_MAXSIZE

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Reported Release:     623 FP2
    
    When the maximun size of the directory is met for
    KHD_TOTAL_HIST_MAXSIZE, the error message that is traced in the
    Operations Log and Universal Message Log overruns the message
    buffer which is only allocated for 128 characters.  This causes
    the stack to be corrupted which affects the unlocking of the
    short term history file and a dead lock occurs on the shortterm
    history file.
    
    RECREATE INSTRUCTIONS:
    Set KHD_TOTAL_HIST_MAXSIZE and see if the trace log shows that
    the lock on the file is not released for the short term history
    file.
    For this customer the short term history file was UNIXDPERF.
    This failure will be driven by the size of the short term
    history file name and how much of the stack is overrun.  So, it
    may not cause the failure for deadlock if the lock flag is not
    affected.
    

Local fix

Problem summary

  • When the maximum size of the directory is met for the
    KHD_TOTAL_HIST_MAXSIZE environment variable, the error message
    that is traced in the Operations Log and Universal Message Log
    overruns the message buffer which is only allocated for 128
    characters. This causes the stack to be corrupted which affects
    the unlocking of the short term history file and a deadlock
    occurs on the short term history file.
    

Problem conclusion

  • Increased the message buffer to 255 bytes instead of 128.
    
    The fix for this APAR is contained in the following maintenance
    packages:
    | fix pack | 6.2.3-TIV-ITM-FP0005
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV43114

  • Reported component name

    TEMA

  • Reported component ID

    5724C04TE

  • Reported release

    623

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-05-24

  • Closed date

    2013-07-31

  • Last modified date

    2014-05-05

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    OA43287 OA44550

Fix information

  • Fixed component name

    TEMA

  • Fixed component ID

    5724C04TE

Applicable component levels

  • R623 PSY

       UP

[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSTFXA","label":"Tivoli Monitoring"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"623"}]

Document Information

Modified date:
30 December 2022