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PI92407: LOG STARTUP MESSAGE FOR LOW 64-BIT MEMLIMIT

Fixes are available

9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11

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APAR status

  • Closed as new function.

Error description

  • Log startup message for low 64-bit MEMLIMIT
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of the Apache-based IBM HTTP Server   *
    *                  on z/OS                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: Provide a warning if the environments   *
    *                      MEMLIMIT is set too low, and improve    *
    *                      recovery in situations where the limit  *
    *                      is exceeded.                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Prior to z/OS v1R10, 64-bit memory was not available by
    default. In V1R10, the default was changed to 2GB.
    2GB is more than enough for most IHS configurations, but
    historical guidance suggested increasing the limit to as
    little as 512MB which is insufficient for many
    configurations.
    

Problem conclusion

  • Several changes are being made as part of this APAR:
    
     - A startup message warns if MEMLIMIT appears too low
       relative to ThreadsPerChild
     - Recovery in the case of exhausted MEMLIMIT was improved
       in a specific scenario where the message
       "Failed to create transaction pool." is issued/
     - The manual and sample procs are being updated to
       clarify the modern z/OS defaults, suggest
       higher example values, and a new recommended
       calculation and limit.
    
    The fix for this APAR will be included in 9.0.0.8 and
    8.5.5.14
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI92407

  • Reported component name

    WAS IHS ZOS

  • Reported component ID

    5655I3510

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-01-15

  • Closed date

    2018-01-16

  • Last modified date

    2018-01-16

  • 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

    WAS IHS ZOS

  • Fixed component ID

    5655I3510

Applicable component levels

  • R850 PSY

       UP

  • R90P PSY

       UP

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Document Information

Modified date:
04 May 2022