IBM Support

PI93374: SESSION AFFINITY CAN BE BROKEN AND RESULT IN ERRONEOUS 503S

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Session Affinity can be broken and result in erroneous 503s
    when multiple editions of a single application are
    simultaneously active.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server WAS ND edition (Virtual              *
    *                  Enterprise/IM Component) that leverage the  *
    *                  On-Demand Router.                           *
    ****************************************************************
    * PROBLEM DESCRIPTION: Session affinity is broken when         *
    *                      multiple editions of a single           *
    *                      application are simultaneously active.  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When routing affinity requests through the On-Demand Router
    (ODR) in environment with multiple editions of a single
    application simultaneously active session affinity is lost
    resulting in 503 http status codes.
    

Problem conclusion

  • The On-Demand Router (ODR) logic has been corrected to properly
    maintain affinity when multiple editions of the same application
    are present and active.
    
    The fix for this APAR is currently targeted for inclusion in fix
    packs 8.5.5.14 and 9.0.0.8.  Please refer to the Recommended
    Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI93374

  • Reported component name

    WEBSPHERE FOR Z

  • Reported component ID

    5655I3500

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-02-05

  • Closed date

    2018-05-14

  • Last modified date

    2018-05-14

  • 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 FOR Z

  • Fixed component ID

    5655I3500

Applicable component levels

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
19 October 2021