IBM Support

PM55922: NODEAGENT STATUS AND PERFORMANCE ISSUE WHEN STOPPING A GROUP OF APPLICATION SERVERS.

Fixes are available

7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • On WebSphere Application Server V7.0 while stopping a cluster,
    the nodeagent is not propagating the appserver's stopped
    notification due to NodeAgentStatusCache refresh of whole node.
    Problem noticed by customer can be application server status is
    slow to display in the administrative console and/or
    intermittent issues with stopping and starting a cluster.
    
    
    From javacore:
    3XMTHREADINFO3           Java callstack:
    4XESTACKTRACE                at java/lang/Thread.sleep(Native
    Method)
    4XESTACKTRACE                at
    java/lang/Thread.sleep(Thread.java:851(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/ws/management/status/NodeAgentStatusCache$StatusCacheTim
    edThread.run(NodeAgentStatusCache.java:785(Compiled Code))
    
    
    
    Follow nodeagent's trace log with management tracing:
    [1/8/12 2:03:48:682 CST] 0003827b NodeAgentStat 3   addToCache
    Stack Trace
    java.lang.Exception:
    addtoCache:
    at java.lang.Throwable.<init>(Throwable.java:67)
    at
    com.ibm.ws.management.status.NodeAgentStatusCache.addToCache(Nod
    eAgentStatusCache.java:623)
    at
    com.ibm.ws.management.nodeagent.NodeAgent.addAdoptedChild(NodeAg
    ent.java:2456)
    at
    com.ibm.ws.management.nodeagent.NodeAgent.monitorProcess(NodeAge
    nt.java:2339)
    at
    com.ibm.ws.management.nodeagent.NodeAgent.handleNotification(Nod
    eAgent.java:2114)
    at
    com.ibm.ws.management.event.ListenerInfo$1.run(ListenerInfo.java
    :137)
    at
    com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManager
    Impl.java:4672)
    at
    com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextM
    anagerImpl.java:4760)
    at
    com.ibm.ws.management.event.ListenerInfo.handleNotification(List
    enerInfo.java:153)
    at
    com.ibm.ws.management.event.NotificationDispatcher$DispatchANoti
    ficationToAListener.run(NotificationDispatcher.java:372)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1604)
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere Application Server   *
    *                  Network Deployment edition, V7.0 and V8.0.  *
    ****************************************************************
    * PROBLEM DESCRIPTION: Nodeagent status and performance        *
    *                      issue when stopping a group of          *
    *                      application servers like a cluster.     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    While stopping a cluster, the application server status is
    slow to display in the administrative console. Also,
    intermittent issues with stopping/starting cluster
    members due to their status being inaccurate. The nodeagent
    status cache is gathering status from all the servers on the
    node which delays some notifications to the DeploymentManager
    server.
    

Problem conclusion

  • Nodeagent status cache code was modified to update the cache
    more efficiently which allows the notifications to get to the
    DeploymentManager more quickly.
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.23 and 8.0.0.4. 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

    PM55922

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-01-12

  • Closed date

    2012-03-02

  • Last modified date

    2012-03-02

  • 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

  • R700 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 October 2021