PH31085: SLOW PERFORMANCE WHEN USING FILE MANAGER REPEATABLE SCRAMBLING WITH THE DATA SET COPY FUNCTION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When running File Manager Data Set Copy (DSC) function with
  repeatable and random default scrambling, performance is slow.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users copying data sets with scrambling.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: Scrambling fields using the REPEAT or   *
  *                      RANDOM option without a value list can  *
  *                      result in high CPU utilization or bad   *
  *                      performance when processing large       *
  *                      data sets.                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  File Manager scrambling code can result in high CPU
  utilization.
  

Problem conclusion

• File Manager has been modified to provide optimization options
  for scrambling when REPEAT or RANDOM is defined for various
  fields in the TO template.
  The new optimization option OPSCRAM can be specified as follows:
  1. Installation options module (default off).
  2. Providing a $$FILEM SET OPSCRAM=OFF|ON|MAX statement in JCL.
  3. Selecting the required optimization option on the COPY TO
     panel
  The default behaviour is OPSCRAM=OFF.
  See the documentation changes for more details.
  For the documentation changes associated with this APAR,
  please refer to the 'What's New' section in the
  File Manager V14 Knowledge Center:
  https://ibm.biz/Bdj3bE
  

Temporary fix

Comments

APAR Information

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

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

Modules/Macros

• FMN0LVL  FMN0LVLJ FMN0LVLK FMN0POPI FMN0POPT FMN1LVL  FMN1LVLJ
  FMN1LVLK FMN1MENU FMN1MJPN FMN1MKOR FMN1POPT FMN1XGLL FMN1XGLX
  FMN2LVL  FMN2POPT FMN3LVL  FMN3POPT FMNFSCRO FMNFTDSC FMNFTDSM
  FMNIA68  FMNMAIN  FMNMAINZ FMNMOD1  FMNMOD2  FMNPDSCR FMNRDC05
  

Fix information

• Fixed component name

  FILE MANAGER Z/

• Fixed component ID

  5655Q4200

Applicable component levels

• RE10 PSY UI73011

     UP20/12/12 P F012

• RE11 PSY UI73012

     UP20/12/12 P F012

• RE12 PSY UI73014

     UP20/12/12 P F012

• RE14 PSY UI73015

     UP20/12/12 P F012

• RE15 PSY UI73016

     UP20/12/12 P F012

• RE16 PSY UI73018

     UP20/12/12 P F012

• RE1A PSY UI73013

     UP20/12/12 P F012

• RE1C PSY UI73017

     UP20/12/12 P F012

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.