IZ99401: OBJECT REFERENCES MISSING IN PHD HEAPDUMPS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    PHD heapdumps contain incorrect references between objects. The
    typical symptom is a self reference back to an object, when
    there should
    be a reference to a different object. For example, a
    java.lang.String object may have a reference to itself, instead
    of to a character
    array. When using tools to examine the heapdump the problem may
    show up as excessive number of roots.
    

Local fix

  • Use a system dump for diagnosis instead of a heap dump
    

Problem summary

  • The problem is caused by incorrect code in the JVM heapdump
    writer.
    

Problem conclusion

  • This defect will be fixed in:
    5.0.0 SR13
    .
    The JVM has been updated to correct the heapdump writer to
    provide correct references between objects.
    .
    To obtain the fix:
    Install build 20110428 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ99401

  • Reported component name

    JAVA 5 J9 COMMO

  • Reported component ID

    620500127

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-04-27

  • Closed date

    2011-05-10

  • Last modified date

    2011-05-10

  • 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

    JAVA 5 J9 COMMO

  • Fixed component ID

    620500127

Applicable component levels

  • R500 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

5.0

Reference #:

IZ99401

Modified date:

2011-05-10

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