IBM Support

PI36818: WEBSPHERE OAUTH TAI TEMPLATE CACHE HAS A SYNCHRONIZED LOCK AND CAN BLOCK LOTS OF THREADS LIBERTY PROFILE

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • WebSphere OAuth TAI template cache has a synchronized
    
    lock and can block lots of threads .
    
    
    
    com/ibm/ws/security/oauth20/util/TemplateRetriever.getTempla
    te
    
    (TemplateRetriever.java) has a lock that blocks all other
    
    threads.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server Liberty    *
    *                  Profile administrators of OAuth 2.0         *
    *                  services                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Liberty profile OAuth 2.0 services can  *
    *                      block all requests if an error occurs   *
    *                      when loading a custom form              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Liberty profile OAuth 2.0 services allow customized consent and
    error forms. If the loading of a custom form does not return,
    all requests are blocked.  An example of an issue with a
    protected resource is when a back-end server that the protected
    resource uses is unavailable.
    

Problem conclusion

  • Liberty profile OAuth 2.0 service is updated to optimize the
    access to custom forms with a Semaphore instead of a
    synchronized lock.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 8.5.5.8.  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

    PI36818

  • Reported component name

    LIBERTY PROFILE

  • Reported component ID

    5724J0814

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-03-11

  • Closed date

    2015-10-09

  • Last modified date

    2015-10-09

  • APAR is sysrouted FROM one or more of the following:

    PI29634

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WAS LIBERTY COR

  • Fixed component ID

    5725L2900

Applicable component levels

  • R855 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"855","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
15 October 2021