PK31839: IPR RELOAD MAY CAUSE PERFORMANCE DEGRADATION REBUILDING ILDS IF DFSVSAMP DD IS NOT PROVIDED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IPR Reload causes performance degradation rebuilding the ILDS
  when all of the following conditions are satisfied:
  
  1. A HALDB which has many logical child occurrences is reloaded
     by IPR Reload with ILDSBLD=C.
  2. The partition to be reloaded is initialized before reloading.
  3. DFSVSAMP DD is not provided in the IPR Reload step.
  

Local fix

• Specify the DFSVSAMP DD in the JCL with VSRBF=32768,5
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IPR Reload utility of IMS       *
  *                 Parallel Reorganization for z/OS Version 3   *
  *                 Release 1 (FMID=H25N310) and Version 3       *
  *                 Release 2 (FMID=H25N320)                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: IPR Reload may cause performance        *
  *                      degradation in rebuilding ILDS if       *
  *                      DFSVSAMP DD is not provided.            *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  IPR Reload causes performance degradation in rebuilding ILDS
  when all of the following conditions are satisfied:
  1. A HALDB which has many logical child occurrences is reloaded
  with ILDSBLD=C.
  2. DFSVSAMP DD is not provided in the IPR Reload step.
  3. The partition to be reloaded is initialized before reloading.
  

Problem conclusion

• The module HPSRMAIN has been modified to change the minimal
  DFSVSAMP definition to reduce the risks for performance
  degradation.
  

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:

  UK18669

Modules/Macros

•    HPSRMAIN
  

Fix information

• Fixed component name

  IMS HIGH PERF L

• Fixed component ID

  5655E0700

Applicable component levels

• R210 PSY UK18669

     UP06/10/12 P F610

Fix is available

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