IBM Support

PH34566: LIMIT NUMBER OF RETRIES FOR 503 RESPONSES

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APAR status

  • Closed as program error.

Error description

  • Requests resulting in 503 response can go through all servers
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: WebSphere Plugin will try all server    *
    *                      for a 503 response                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    They WebSphere Plugin is set to retry each server of a cluster
    if it gets a 503 response.  This can cause the plugin to mark
    each one down.
    

Problem conclusion

  • The Plugin has been modified to allow for a new property
    called request503Retry that can be set at the Cluster level.
    Setting the property to "-1" will retry the request against all
    members.  A "0" will only do the initial request.  Any other
    positive number should be no more than the number of cluster
    members to limit how many retries the plugin should attempt.
    
    To set this property for plugin generation, you will go to the
    admin console Server Types>Clusters>WebSphere application
    server clusters>[your cluster]>Cluster members>[First member]>
    Custom properties.
    Click new and add "PLG.Cluster.request503Retry" and a value
    you want it to use.
    
    The fix for this APAR is targeted for inclusion in fix pack
    8.5.5.20 & 9.0.5.8. 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

    PH34566

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-02-17

  • Closed date

    2021-03-31

  • Last modified date

    2021-03-31

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"900"}]

Document Information

Modified date:
01 April 2021