PQ48976: INCORRECT RAP CHAIN BUILT WHEN USING SEARCH<0.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Incorrect RAP chain built when using SEARCH<0.
  

Local fix

• Specify SEARCH=0 or -0 to bypass the space search logic.
  0 and -0 have the same meaning, bypassing the space search
  and putting the segment not fitting in its home block into
  the overflow area.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IMS High Performance Load       *
  *                 ( HP Load ) Release 1. (FMID=H1IM110)        *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect RAP chain of HDAM/PHDAM       *
  *                      database built by HP Load when using    *
  *                      SEARCH<0, a negative value for the      *
  *                      SEARCH parameter.                       *
  *                                                              *
  *                      Even when using the SEARCH>0, same      *
  *                      problem might occur for the root        *
  *                      segments randomized to the last         *
  *                      block/CI in RAA. Because HP Load        *
  *                      cannot perform forward search at the    *
  *                      last block in the HDAM/PHDAM RAA.       *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  The incorrect RAP chain resulted from the retry process in the
  SRCHBLK subroutine. When the space search returns a candidate
  block/CI but the actual segment does not fit into the candidate,
  HP Load turns off the bit in the space map associated to the
  block/CI so that the subsequent space search no longer selects
  the block/CI, and does retry to search for the new candidate
  block/CI. In this process, HP Load updates only the RBN value
  of the current block/CI with the RBN of home block, and any
  other values are unchanged.
  (This RBN trick is required for the retry process. But it should
  have changed other values at the same time.)
  In the subsequent root segment process, this discrepancy causes
  misunderstanding of the block/CI (candidate before the retry) as
  the home block. HP Load just uses the block/CI when it has
  enough space to keep the root. It causes the incorrect synonym
  chain.
  

Problem conclusion

• The module HPSRHDLD and HPSRRLDM have been modified to regain
  the complete information of the home block before the retry
  process.
  

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:

  UQ54712

Modules/Macros

•    HPSRHDLD HPSRHDL5 HPSRHDL6 HPSRHDL7 HPSRRLDM
  HPSRRLD7
  

Fix information

• Fixed component name

  IMS HIGH PERF L

• Fixed component ID

  5655E0700

Applicable component levels

• R110 PSY UQ54712

     UP01/06/01 P F105

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.