PM01071: ADJUST SUBPOOL SIZES IF FPBP64=Y AT IMS STARTUP

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ADJUST SUBPOOL SIZES IF FPBP64=Y AT IMS STARTUP
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: ALL IMSFP V11 FPBP64 USERS.                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: Apar will alter size of initial subpool *
  *                      allocation sizes.                       *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  This apar was opened to asjust the initial size of the subpools
  at IMS start up based upon customer feedback.
  

Problem conclusion

• GEN:
  POSTREQ PM07658
  KEYWORDS:
  
  *** END IMS KEYWORDS ***
  This apar will adjust the initial subpool sizes to align
  with buffer use feedback.
  
  1.  Increase the base subpool size to 1/8 of the # AREAs wtih
      the associated CI size.  If there are 2000 ares defined with
      a CISIZE of 1K, the initial subpool size will be 250
      buffers.
  
  2.  Determine the largest CI size in the system, which will be
      used when allocating the SYSTEM subpool with the largest
      buffer size.
  
  3.  Make the extent size for the largest CI sized system subpool
      to 2x the base size.  This is due to system services using
      the largest system buffer size as work areas.
  
  4.  When creating a system subpool with a buffer size that will
      be used for SDEP inserts, make the base section 1/4 of the #
      SDEP AREAs with the associated CI size.  This is to allow
      for increased buffer use for SDEPs.  For 400 AREAs with
      SDEPs, the base size will be 100 buffers.
  
  DBFBPNA:
    added byte to save the largest CI size.
  
  DBFINI29
    determine the largest CI size in the system for INI22 to use.
  
  DBFBPNS0
    Make the extent size of the largest buffer size 2x the size
    of the base section.
  
  DBFINI22
    1.  If AREAs with SDEPs defined exist for the CI size being
        created, make the SYSTEM subpool larger.
    2.  Increase the initial size of the common subpools.
  

Temporary fix

Comments

• REPINNED RP10/02/15 (ATXT) TO ADD POSTREQ PM07658 INFO.
   **** PE10/02/15 PTF IN ERROR. SEE APAR PM07658 FOR DESCRIPTION
  ×**** PE10/02/15 PTF IN ERROR. SEE APAR PM07658  FOR DESCRIPTION
  

APAR Information

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

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

  UK52777

Modules/Macros

• DBFBPNDA DBFBPNS0 DBFINI22 DBFINI29
  

Fix information

• Fixed component name

  IMS V11

• Fixed component ID

  5635A0200

Applicable component levels

• R100 PSY UK52777

     UP09/12/18 P F912

Fix is available

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