IV19640: EXTENDING BOOTCLASSPATH MORE THAN ONCE MAY CAUSE ASSERTION WHEN SHARED CLASSES ENABLED

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: j9shr.1009   *   ** ASSERTION FAILED ** at
    ClasspathItem.cpp:189: ((0 ))
    .
    Stack Trace: N/A
    .
    

Local fix

  • This issue can be worked around by not extending the
    bootclasspath, or disabling the shared class cache using
    -Xshareclasses:none.
    

Problem summary

  • When the bootclasspath is extended more than once using
    java.lang.instrument.appendToBootstrapClassLoaderSearch(), or
    the JVMTI API AddToBootstrapClassLoaderSearch(), in rare cases
    this could cause an assertion when running the JVM with the
    shared cache enabled. The -Xshareclasses option controls the
    behavior of the shared cache.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR1
    6.0.1 SR2
    6.0.0 SR11
    .
    The JVM has been updated to prevent the assertion from occurring
    when extending the bootclasspath more than once.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV19640

  • 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

    2012-04-12

  • Closed date

    2012-04-12

  • Last modified date

    2012-04-12

  • 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

    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 #:

IV19640

Modified date:

2012-04-12

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