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PI99507: NATIVE OUTOFMEMORY ERRORS DUE THREAD LEAK IN OTIS CONNECTION HANDLING

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • In rare cases the OTiS Derby Database might be locked. As a
    result, connections to the Derby DB are piling up and causing
    the native OutOfMemory Error. Deletion of the lock file solved
    the issue temporarily.
    
    JavaCores capturing the thread leak will show following
    callstack:
    
    3XMTHREADINFO "derby.rawStoreDaemon"
    ...
    3XMTHREADINFO3 Java callstack:
    4XESTACKTRACE at java/lang/Object.wait(Native Method)
    4XESTACKTRACE at java/lang/Object.wait(Object.java:201(Compiled
    Code))
    4XESTACKTRACE at
    org/apache/derby/impl/services/daemon/BasicDaemon.rest(Bytecode
    PC:22(Compiled Code))
    5XESTACKTRACE (entered lock:
    org/apache/derby/impl/services/daemon/BasicDaemon@0x0000000748AA
    CB40, entry count: 1)
    4XESTACKTRACE at
    org/apache/derby/impl/services/daemon/BasicDaemon.run(Bytecode
    PC:22(Compiled Code))
    4XESTACKTRACE at java/lang/Thread.run(Thread.java:785)
    

Local fix

  • Deleting the derby lock file db.lck temporary fix the problem.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Network Deployment version 8.5.5 or  *
    *                  later                                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: OutOfMemoryError may occur on           *
    *                      deployment manager or job manager       *
    *                      server when there is an issue with      *
    *                      closing database.                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    OutOfMemoryError may occur on deployment manager
    or job manager server if there is a problem in closing the
    database that is used by the internal OTiS application.
    

Problem conclusion

  • The code is updated to ensure the database is shut down if
    there is an issue in closing the database.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 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

    PI99507

  • 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

    2018-06-25

  • Closed date

    2018-08-10

  • Last modified date

    2018-08-10

  • 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

  • R850 PSY

       UP

  • R900 PSY

       UP

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

Document Information

Modified date:
19 October 2021