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VM66603: HCD - COMPARE REPORT ISSUE AFTER APAR VM66445 22/04/13 PTF PECHANGE

A fix is available

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APAR status

  • Closed as program error.

Error description

  • This can cause mismatching comparisons on the device ranges
    causing confusion in the final report
    
    ANALYSIS:
    CBDMCRPR
    
    KNOWN IMPACT:
    HCD Bad IODF comparision report.
    
    VERIFICATION STEPS:
    Verify if APAR VM66445 is applied.
    
    
    PE Information:
    
    User's Affected:
    Users of the HCD compare reports
    who installed
    APAR VM66445: HCD71 UM35949, or
    APAR VM66445: HCD72 UM35948
    
    Users are affected when
    creating HCD Compare Reports.
    
    User Impact:
    APAR VM66445 fixed the problem it
    reported but introduced a new problem.
    Users of the HCD Compare Reports may
    see wrong results, showing differences
    for objects that are in fact unchanged.
    
    Affected Reports are:
    - Esoteric Compare Report
    - Control Unit Compare Report
    - Channel Path Compare Report
    
    Users who need to configure an IBM z16,
    machine type 3931, can safely install
    and use VM66445.  They should only be
    aware that HCD Compare Reports are
    unreliable until the fixing
    APAR VM66603 is installed.
    
    Local Fix:
    Remove / do not apply the
    offending PTF (if possible).
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of the HCD compare reports             *
    ****************************************************************
    * PROBLEM DESCRIPTION: Several HCD Compare Reports produced    *
    *                      wrong results, by showing differences   *
    *                      for objects that are in fact unchanged. *
    *                                                              *
    *                      Affected Reports are:                   *
    *                      - Esoteric Compare Report               *
    *                      - Control Unit Compare Report           *
    *                      - Channel Path Compare Report           *
    *                                                              *
    *                      PE Information:                         *
    *                                                              *
    *                      User's Affected:                        *
    *                      Users of the HCD compare reports        *
    *                      who installed                           *
    *                      APAR VM66445: HCD71 UM35949, or         *
    *                      APAR VM66445: HCD72 UM35948             *
    *                                                              *
    *                      Users are affected when                 *
    *                      creating HCD Compare Reports.           *
    *                                                              *
    *                      SUPing PTFs are:                        *
    *                        HCD71: UM35960                        *
    *                        HCD72: UM35959                        *
    *                                                              *
    *                      User Impact:                            *
    *                      APAR VM66445 fixed the problem it       *
    *                      reported but introduced a new problem.  *
    *                      Users of the HCD Compare Reports may    *
    *                      see wrong results, showing differences  *
    *                      for objects that are in fact unchanged. *
    *                                                              *
    *                      Affected Reports are:                   *
    *                      - Esoteric Compare Report               *
    *                      - Control Unit Compare Report           *
    *                      - Channel Path Compare Report           *
    *                                                              *
    *                      Users who need to configure an IBM z16, *
    *                      machine type 3931, can safely install   *
    *                      and use VM66445.  They should only be   *
    *                      aware that HCD Compare Reports are      *
    *                      unreliable until the fixing             *
    *                      APAR VM66603 is installed.              *
    *                                                              *
    *                      Local Fix:                              *
    *                      Remove / do not apply the               *
    *                      offending PTF (if possible).            *
    ****************************************************************
    Misleading information was shown in several HCD Compare Reports.
    This was caused by failing to extend
    (aliases of) internal data structures.
    

Problem conclusion

  • With this APAR, HCD lines up object ranges correctly.
    Unchanged objects are no longer
    incorrectly reported as differences.
    

Temporary fix

Comments

APAR Information

  • APAR number

    VM66603

  • Reported component name

    HCD/HCM

  • Reported component ID

    568411219

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2022-04-12

  • Closed date

    2022-07-20

  • Last modified date

    2022-09-08

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

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

    UM35960

Modules/Macros

  • CBDMCONF CBDMCRPR CBDMIFIR CBDMMRDV CBDMSDPL CBDMSENV
    

Fix information

  • Fixed component name

    HCD/HCM

  • Fixed component ID

    568411219

Applicable component levels

  • R710 PSY UM35960

       UP22/07/21 I 1000 {

  • R720 PSY UM35959

       UP22/07/21 I 1000 {

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

Modified date:
08 September 2022