IBM Support

PH23464: PROVIDE A MECHANISM TO DISABLE ONE-PHASE COMMIT OPTIMIZATION

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APAR status

  • Closed as program error.

Error description

  • Provide a mechanism to disable one-phase commit optimization
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: Provide a mechanism to disable          *
    *                      one-phase commit optimizations for      *
    *                      JTA transactions.                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    If a JTA transaction involves a single resource, or, if during
    prepare all but the last resource votes read-only, the
    WebSphere Application Server Transaction Manager performs a
    one-phase commit optimization. There is currently no mechanism
    to disable the one-phase optimization.
    

Problem conclusion

  • The one-phase commit optimization can be disabled by setting
    the JVM System Property
    com.ibm.ws.Transaction.disableOnePhaseCommitOptimisation to a
    value of true. The default value is false, in which case the
    behaviour remains unchanged and one-phase commit optimizations
    are performed as before the APAR.
    
    The fix for this APAR is targeted for inclusion in fix pack
    8.5.5.18 and 9.0.5.5. For more information, see 'Recommended
    Updates for WebSphere Application Server':
    https://www.ibm.com/support/pages/node/715553
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH23464

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-03-19

  • Closed date

    2020-09-10

  • Last modified date

    2020-09-10

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850"}]

Document Information

Modified date:
10 September 2020