IV26358: HANG WRITING JAVACORE AFTER FAILED HEAPDUMP

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: The JVM hangs when attempting to write a javacore
    file.  The hang occurs when a preceding heapdump has failed to
    write due to a disk full error.
    .
    Stack Trace: pthread_cond_wait
    j9thread_monitor_enter
    allClassesStartDo
    writeLoaderCallBack
    pool_do
    JavaCoreDumpWriter::writeClassSection
    protectedWriteSection
    j9sig_protect
    JavaCoreDumpWriter::JavaCoreDumpWriter
    runJavadump
    doJavaDump
    .
    

Local fix

  • Disable heapdump and/or javacore generation.
    

Problem summary

  • The problem is caused when a heapdump fails part-way through,
    due to a disk full error.
    A subsequent javacore request then hangs the JVM.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR3
    6.0.1 SR4
    6.0.0 SR12
    .
    The JVM has been updated to correctly handle the disk full
    error, so that the javacore request succeeds and the JVM does
    not hang.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV26358

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-08-16

  • Closed date

    2012-08-16

  • Last modified date

    2012-08-23

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

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

    PM71431

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R260 PSY

       UP

  • R600 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

260

Reference #:

IV26358

Modified date:

2012-08-23

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