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IC79916: AGENT CRASHES REGULARLY AND PRODUCES JAVA CORE DUMPS; EVEN WHEN NO TRANSFERS ARE ACTIVELY RUNNING.

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APAR status

  • Closed as program error.

Error description

  • Error Description￘
    A WebSphere MQ File Transfer Edition agent with one or more
    running resource monitors crashes on a regular bases; seemingly
    even when no transfers are active. The resource monitor is
    configured to kick off a Ant script using the fteAnt command.
    
    The Java core dumps show that the agent suffered an
    OutOfMemoryError.
    

Local fix

  • Local Fix￘
    None
    

Problem summary

  • The attach API is enabled by default in the IBM Java Runtime
    Environment that is shipped with WebSphere MQ File Transfer
    Edition 7.0.3.0 and above. This API can cause an
    OutOfMemoryError in situations where a large number of threads
    are in use.
    
    Subsequently all commands use a JVM property to disable the
    attach API to ensure the OutOfMemoryError does not occur.
    
    The fteAnt command on Windows was found to be lacking this JVM
    property, and so the attach API was enabled when using that
    command.
    
    USERS AFFECTED:
    Users of fteAnt
    
    PLATFORMS AFFECTED:
    Windows
    

Problem conclusion

  • The fteAnt command for Windows has been altered to ensure that
    it sets the JVM property to disable the attach API, thereby
    preventing the OutOfMemoryError if a large number of threads
    are created.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 7.0.4.2.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC79916

  • Reported component name

    WMQ FILE TRANSF

  • Reported component ID

    5724R1000

  • Reported release

    703

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-11-21

  • Closed date

    2011-12-22

  • Last modified date

    2012-07-20

  • 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 FILE TRANSF

  • Fixed component ID

    5724R1000

Applicable component levels

  • R703 PSY

       UP

  • R704 PSY

       UP

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Document Information

Modified date:
20 July 2012