IBM Support

PH01546: JVM CUSTOM PROPERTY TO DISABLE NODE SYNCHRONIZATION

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APAR status

  • Closed as program error.

Error description

  • Create a JVM custom property to disable node synchronization
    prior to executing a configuration save operation when doing a
    rollout via the Administrative Console.
    

Local fix

  • NA
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server versions 8.5.5 and 9.0.              *
    ****************************************************************
    * PROBLEM DESCRIPTION: When a rollout update is initiated on   *
    *                      an application through the admin        *
    *                      console on a system with automatic      *
    *                      node synchronization still enabled,     *
    *                      an automatic synchronization may        *
    *                      occur before it is being disabled and   *
    *                      cause the application to be down.       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    While running a rollout update through the admin console, a
    save may be performed before the node synchronization is
    disabled. The save may cause an automatic synchronization to
    happen between a deployment manager and its nodes when the
    synchronization interval is reached and before the node
    synchronization is disabled. Since the synchronization
    includes the changes from the application update operation, it
    causes an outage of a customer's application.
    

Problem conclusion

  • The code has been modified to allow the user to set the system
    property
    com.ibm.websphere.console.application.rolloutUpdate.disableAutoS
    ync on the deployment manager JVM which disables the node
    synchronization before the configuration save is performed.
    
    To enable the system property in Admin Console:
    
    System administration --> Deployment manager --> Java and
    Process Management --> Process definition --> Java Virtual
    Machine --> Custom properties
    
    Name :
    com.ibm.websphere.console.application.rolloutUpdate.disableAutoS
    ync
    
    Value : true
    
    The fix for this APAR is currently targeted for inclusion in
    fixpacks 8.5.5.15 and 9.0.0.10.  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

    PH01546

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-08-09

  • Closed date

    2018-10-18

  • Last modified date

    2018-10-18

  • 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



Document information

More support for: WebSphere Application Server
General

Software version: 850

Reference #: PH01546

Modified date: 18 October 2018


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