PM84609: RECORD FIELD DCDOVERA CHANGED FROM SIGNED TO UNSIGNED IN Z/OS 1R10 CAUSING MORE UNUSED SPACE THAN ALLOCATED SPACE IN DFSMS11.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • RECORD FIELD DCDOVERA CHANGED FROM SIGNED TO UNSIGNED IN Z/OS
    1R10 CAUSING MORE UNUSED SPACE THAN ALLOCATED SPACE IN DFSMS11.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All TDSz users of the DFSMS component.       *
    ****************************************************************
    * PROBLEM DESCRIPTION: 1: The field DCDOVERA could sometimes   *
    *                      have negative values which made the     *
    *                      calculation incorrect.                  *
    *                                                              *
    *                      2: The calculation for unused space was *
    *                      adjusting for VSAM_RELEASE_SPACE, when  *
    *                      this was not appropriate.               *
    ****************************************************************
    * RECOMMENDATION: APPLY THE PTF FIXING THIS APAR               *
    ****************************************************************
    1: The field DCDOVERA in records
    DCOLLECT_D and DCOLLECT_DA was signed
    when it should have been unsigned, as
    per z/OS V1R10 documentation.
    
    2: The calculation for unused space was
    adjusting for VSAM_RELEASE_SPACE, but
    this was effectively just doubling the
    unused space as with VSAM extended data
    sets, VSAM_RELEASE_SPACE should equal
    SPACE_ALLOCATED minus SPACE_USED. This
    caused the calculated unused space to
    be higher than the allocated space.
    
    3: The calculations for SPACE_ALLOCATED and SPACE_USED were
    flawed, not properly accounting for VSAM status or 64-bit values
    and were inconsistent with each other and with their column
    comments.
    

Problem conclusion

  • 1: DCDOVERA and VSAM_RELEASE_SPACE are now calculated correctly.
    2: SPACE_ALLOCATED_TOTAL and SPACE_USED_TOTAL are now calculated
    correctly.
    3: Query for 'Most Wasted Space' report changed to no longer
    include VSAM_RELEASE_SPACE
    4: Document changes to DFSMS_DATASET_D _M for VSAM_RELEASE_SPACE
    SPACE_ALLOCATED_TOTAL and SPACE_USED_TOTAL columns, and for
    DFSMS11 report.
    8A0Y
    8C1Y
    8C2Y
    80AY
    801Y
    81CY
    810Y
    82CY
    DRLODFSM
    DRLQDF11
    DRLRDCDA
    DRLRDCOD
    DRLTDFDA
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM84609

  • Reported component name

    TDS FOR Z/OS

  • Reported component ID

    569510100

  • Reported release

    810

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-03-12

  • Closed date

    2013-05-09

  • Last modified date

    2013-06-04

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

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

    UK94152 UK94153 UK94154 UK94155 UK94156 UK94157 UK94158 UK94159

Modules/Macros

  •    DRLODFSM DRLQDF11 DRLRDCDA DRLRDCOD DRLTDFDA
    

Publications Referenced
SH19681912 SH19681911      

Fix information

  • Fixed component name

    TDS FOR Z/OS

  • Fixed component ID

    569510100

Applicable component levels

  • R8A0 PSY UK94154

       UP13/05/12 P F305

  • R8C1 PSY UK94155

       UP13/05/12 P F305

  • R8C2 PSY UK94156

       UP13/05/12 P F305

  • R80A PSY UK94157

       UP13/05/12 P F305

  • R801 PSY UK94152

       UP13/05/12 P F305

  • R81C PSY UK94158

       UP13/05/12 P F305

  • R810 PSY UK94153

       UP13/05/12 P F305

  • R82C PSY UK94159

       UP13/05/12 P F305

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:

Tivoli Decision Support for z/OS

Software version:

810

Reference #:

PM84609

Modified date:

2013-06-04

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