IC66157: EXECUTING A JAVA ROUTINE BINDS THE SESSION THREAD PERMANENTLY TO A SPECIFIC JVP PARTICULARLY WHEN EXECUTING NON-JAVA CODE

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APAR status

  • Closed as program error.

Error description

  • Once a user executes a java routine, the session thread is
    permanently bound to a specific jvp particularly when executing
    non-java code.
    
    Threads may move among the other JVPs, via load balancing, when
    subsequent java calls are made.  However, the sessions are stuck
    on one particular VP when no java calls are being made which
    disables the engine's built-in load balancing of threads.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * IDS v11.50.xC6 and lower versions                            *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Application sessions executing Java UDRs get tied to the JVP *
    * process on which the Java UDR is executed even after the UDR *
    * execution is complete. This leads to sessions piling up on   *
    * the ready queue for the JVP when CPU VP remains idle. In     *
    * effect server's built-in load balancing feature for CPU VPs  *
    * is rendered ineffective.                                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 11.50.xC7 or higher                               *
    ****************************************************************
    

Problem conclusion

  • Ensured that sessions migrate back to CPU VP once the Java UDR
    execution is done.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC66157

  • Reported component name

    IBM IDS ENTRP E

  • Reported component ID

    5724L2304

  • Reported release

    B15

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-02-08

  • Closed date

    2010-11-10

  • Last modified date

    2010-11-10

  • 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

    IBM IDS ENTRP E

  • Fixed component ID

    5724L2304

Applicable component levels

  • RB15 PSY

       UP



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Document information


More support for:

Informix Servers

Software version:

B15

Reference #:

IC66157

Modified date:

2010-11-10

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