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PM56334: WEBSPHERE MQ FILE TRANSFER EDITION AGENT PROCESS FAILS WITH A JAVA.LANG.NULLPOINTEREXCEPTION

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APAR status

  • Closed as program error.

Error description

  • The symptoms for this APAR are similar to APAR IC79441.  The WMQ
    FTE agent process fails with a
    java.lang. NullPointerException.
     The following stack is evident in the FTE agent FDC file
     Method:     uncaughtException
     Probe:      ABEND_001
     Cause:      java.lang.NullPointerException
    .
    While this has the same symptoms as APAR IC79441, it is actually
    has a different root cause. It seems that because the agent
    ended uncleanly before making its first transfer checkpoint, we
    throw a NullPointerException as observed in the ABEND file. This
    is because the code does not take account for the situation
    whereby the transfer may move to state RUNNING but to complete
    no checkpoints. During recovery we expect a checkpoint, and so
    throw the NullPointerException.
    

Local fix

Problem summary

  • If an agent failed without having made any checkpoints for a
    given transfer, and had already moved the transfer into RUNNING
    state, the agent would never be able to recover and would log a
    NullPointerException ABEND on every attempt to start.
    
    USERS AFFECTED:
    All
    
    PLATFORMS AFFECTED:
    All
    

Problem conclusion

  • The code has been altered to cater for the window in which no
    checkpoints have been made for a given transfer. In this
    situation transfer of the file will restart from the beginning.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 7.0.4.2.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM56334

  • Reported component name

    WMQ FTE Z/OS

  • Reported component ID

    5655U8000

  • Reported release

    703

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-01-19

  • Closed date

    2012-02-06

  • Last modified date

    2012-02-06

  • 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 FTE Z/OS

  • Fixed component ID

    5655U8000

Applicable component levels

  • R703 PSY

       UP

  • R704 PSY

       UP

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Document Information

Modified date:
06 February 2012