IV10068: SHARED CLASSES MEMORY IS NOT REUSED ON JDK STARTUP

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: When starting the JDK the Shared memory segment
    previously allocated for shared classes is not reused.
    .
    Stack Trace: N/A
    .
    using AIX and ipcs -am it is possible to see multiple shared
    memory segments.
    

Local fix

  • Change the effective group ID (egid) to the same as the Group ID
    (GID)
    

Problem summary

  • This problem is caused by the JVM comparing the GID of the user
    against the shared classes memory, but storing the EGID in the
    shared memory segment. Causing the JVM to create a new shared
    memory segment on startup.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR10
    6.0.1 SR1
    7.0.0 SR1
    5.0.0 SR14
    .
    The JVM has been updated to compare the EGID to the ID stored in
    the shared memory segment.
    .
    To obtain the fix:
    Install build 20111025 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV10068

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-11-04

  • Closed date

    2011-11-15

  • Last modified date

    2011-11-28

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

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

    IV10072

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R600 PSY

       UP

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

6.0

Reference #:

IV10068

Modified date:

2011-11-28

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