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PH66856: DSN1COMP ENHANCEMENT

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as new function.

Error description

  • DSN1COMP utility enhanced with the following improvements:
    - The REORG option on DSN1COMP will be enhanced to more closely
       match the REORG utility in behavior and thereby provide a
       more accurate compression estimate
    - LOB compression report to include more statistics on LOB
       sizing and a more accurate LOB compression estimation
    - Option to externalize dictionary created by DSN1COMP now
       supports Huffman dictionaries
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All Db2 13 for z/OS users of DSN1COMP.       *
    ****************************************************************
    * PROBLEM DESCRIPTION: General improvements to DSN1COMP that   *
    *                      will improve the compression            *
    *                      estimation, report clarity, and the     *
    *                      capability to externalize Huffman       *
    *                      dictionaries                            *
    ****************************************************************
    DSN1COMP utility enhanced with the following improvements:
    - The REORG option on DSN1COMP will be enhanced to more closely
      match the REORG utility in behavior and thereby provide a
      more accurate compression estimate
    - LOB compression report to include more statistics on LOB
      sizing and a more accurate LOB compression estimation.
    - LOB compression report improved for added clarity.
    - Option to externalize dictionary created by DSN1COMP now
      supports Huffman dictionaries
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PH66856

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    D10

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / New Function / Xsystem

  • Submitted date

    2025-06-04

  • Closed date

    2025-06-30

  • Last modified date

    2025-08-02

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

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

    UO03874

Modules/Macros

  • DSN1COMP DSN1DCIX DSN1DCLB DSN1DCTE
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RD10 PSY UO03874

       UP25/07/08 P F507  

Fix is available

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Document Information

Modified date:
02 August 2025