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IV93763: PROBLEMS CAN OCCUR WITH THREAD_CPUTIME AND THREAD_CPUTIME_FAST

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • In the latest AIX Service Packs, using the thread_cputime or
    thread_cputime_fast interfaces can cause
    invalid data in the floating point and vector registers.
    .
    This has been primarily seen to affect Oracle 11gR2 (11.2.0.3
    and 11.2.0.4), which use this interface.
    Multiple errors have been seen in these Oracle 11gR2 releases
    as a result of this issue, including:
    - ORA 600 errors
    - oracle process core dump
    - errors in redo logs and check sum errors in other blocks
    

Local fix

Problem summary

  • The thread_cputime or thread_cputime_fast interfaces can
    cause invalid data in the FP/VMX/VSX registers if the thread
    page faults in this function.
    

Problem conclusion

  • Remove potential for page fault.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV93763

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-02-27

  • Closed date

    2017-03-01

  • Last modified date

    2017-10-30

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

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

    IV93840 IV93845 IV93883 IV93885 IV93906 U878670

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U878670

       UP17/10/30 I 1000

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Document Information

Modified date:
19 April 2022