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JR30654: An instance crash can occur when snapshots are run from a version 9 (and later) client against a version 8 server.

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • An instance crash can occur when snapshots are run from a
    version 9 (and later) client against a version 8 server.
    
    The problem arises due to memory corruption in the server
    introduced when processing the snapshot request. A possible
    stack trace when detecting the memory corruption is:
    
    ----------------------------------------------------------------
    MemTreeGet
    allocateMemoryBlock
    sqlogmblkEx
    sqlmckma
    sqlmonszbackend
    ...
    ----------------------------------------------------------------
    

Local fix

  • Possible circumvention for this issue are:
    
    1. Don't issue snapshot requests against down-level servers.
    2. Upgrade the server to the same level as the clients.
    

Problem summary

  • Users affected : (v9 client+v8 server)
    Problem Description # An instance crash can occur when snapshots
    are run from a version 9 (and later) client against a version 8
    server.
    
    Problem Summary #
    1. Don't issue snapshot requests against down-level servers.
    2. Upgrade the server to the same level as the clients.
    

Problem conclusion

  • First fixed in DB2 v91 FP7
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR30654

  • Reported component name

    DB2 UDB ESE WIN

  • Reported component ID

    5765F4101

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-10-03

  • Closed date

    2009-04-16

  • Last modified date

    2009-04-16

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

    JR30653

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

    JR30656

Fix information

  • Fixed component name

    DB2 UDB ESE WIN

  • Fixed component ID

    5765F4101

Applicable component levels

  • R910 PSY

       UP

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Document Information

Modified date:
07 October 2021