PM83736: SEVERAL RANGES OF VALUES FOR POOLLIMIT ARE BEING REJECTED

A fix is available

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APAR status

  • Closed as unreproducible in next release.

Error description

  • Attempts to perform an OBEYFILE to update the value specified
    for POOLLIMIT on the GLOBALCONFIG statement may be rejected with
    the following error:
    
    EZZ0683I GLOBALCONFIG POOLLIMIT CONTAINS AN INCORRECT VALUE xxxx
    
    This error normally means that the value is outside of the
    acceptable range (10M to 2047M, or 0), or that it is a reduction
    from the current value which would cause pool (private) storage
    to become CONSTRAINED because of the current usage (as shown by
    the DISPLAY TCPIP,,STOR command).  However, none of these limits
    apply.
    
    For example:  Specifying 51M will work, but 52M will fail.
    

Local fix

  • Ensure that the value specified provides the largest result for
    the following formula (use K specifications instead of M for
    the best results):
    
       MOD( nnn * 80, 4294967296 )
    
    Or, disable POOLLIMIT by specifying 0.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of the IBM Communications Server   *
    *                 for z/OS Version 1 Release(s) 13 IP          *
    ****************************************************************
    * PROBLEM DESCRIPTION: User issued a Vary Obeyfile command to  *
    *                      change a POOLLIMIT keyword using a      *
    *                      valid value, but got the following      *
    *                      message:                                *
    *                      EZZ0683I GLOBALCONFIG POOLLIMIT         *
    *                      CONTAINS AN INCORRECT VALUE             *
    *                      The same error message can also be      *
    *                      issued for ECSALIMIT problems.          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    EZZ0683I message is issued for the following reason:
    When calculating 80% of the new value of the POOLLIMIT, the
    code first multiplies the new value by 80 and then divides by
    100. Only one register is used for the multiplication, so if
    the product is larger than 4 bytes, the overflow bytes are lost.
    The code then divides the 4 bytes by 100 so the resulting
    value could end up being less than the current value.
    +-------------------------------------------------------------+
    + Please check our Communications Server for OS/390 homepages +
    + for common networking tips and fixes.  The URL for these    +
    + homepages can be found in Informational APAR II11334.       +
    +-------------------------------------------------------------+
    

Problem conclusion

Temporary fix

Comments

  • EZBTIGBL will be changed to correctly handle POOLLIMIT and
    ECSALIMIT values during profile processing.
    

APAR Information

  • APAR number

    PM83736

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    1D0

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-02-27

  • Closed date

    2013-03-27

  • Last modified date

    2013-05-06

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

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

    UK92927

Modules/Macros

  • EZBTIGBL
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R1D0 PSY UK92927

       UP13/04/23 P F304

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



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Document information


More support for:

z/OS family

Software version:

1D0

Operating system(s):

z/OS

Reference #:

PM83736

Modified date:

2013-05-06

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