IV24413: Z/OS JVM MAY RESPOND INTERMITTENTLY TO MULTIPLE ASYNCHRONOUS SIG NALS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: On z/OS, if multiple asynchronous signals (e.g.
    SIGQUIT) are issued to the JVM in quick succession, the JVM may
    fail to respond promptly to the second and subsequent signals.
    .
    Stack Trace: N/A
    .
    

Local fix

  • This issue can be worked around by ensuring that, when issuing
    multiple asynchronous signals to the JVM, the subsequent signals
    are not issued until the preceding one has been handled.
    

Problem summary

  • The problem is caused by a race condition in the JVM signal
    handling code.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 SR4
    7.0.0 SR3
    .
    The JVM has been updated to remove the race condition.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV24413

  • 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

    2012-07-06

  • Closed date

    2012-07-06

  • Last modified date

    2012-07-24

  • 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



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

260

Reference #:

IV24413

Modified date:

2012-07-24

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