PK43832: DEDBPC FABADA5 REPORT DATA TRUNCATED

APAR status

• Closed as program error.

Error description

• 1. ABEND0CB FABADA5 at x'4FDC' running the DEDB Pointer
  Checker.
  2. When the actual data values of some fields of the DEDB PC
     FABADA5 reports are larger than the Max possible number to
     report, the first part of the number will be truncated due to
     an overflow condition. Such field must be shown by C'***' to
     indicate an overflow condition.
  This is a forward fit of HPFPU V2R2 APAR PK42116 and PK43375.
  Keyword: ABNEDS0CB
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DEDB Pointer Checker users of High       *
  *                 Performance Fast Path Utilities FP Basic     *
  *                 Tools Version 3 Release 1 (FMID: H31A310).   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Forward Fit APAR of FPB V2R2 PK42116    *
  *                      and PK43375:                            *
  *                      1.IMS High Performance Utility FABADA5  *
  *                      failed with an abend S0CB (decimal      *
  *                      divide exception).                      *
  *                      2.When actual data values of some       *
  *                      fields of the DEDB PC FABADA5 reports   *
  *                      are larger than the Max possible number *
  *                      to report, the first part of the number *
  *                      will be truncated due to an overflow    *
  *                      condition. The field should indicate    *
  *                      C'***' to show the overflow condition.  *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  Forward Fit APAR of FPB V2R2 PK42116 and PK43375:
  This APAR solves the following 2 problems.
  1.IMS High Performance Utility FABADA5 failed with an abend S0CB
  (decimal divide exception) on the DP instruction in FABADA5.
  The abend happened during calculating the average of IOVF CI's
  used in the IOVF section of the DEDB Area Analysis report for
  Freespace Analysis.
  2.When actual data values of some fields of the DEDB PC FABADA5
  reports are larger than the Max possible number to report,
  the first part of the number will be truncated due to an
  overflow condition. The field should indicate C'***' to show
  the overflow condition.
  

Problem conclusion

• 1.The cause of the abend was the overflow condition which had
  happened when a large number of IOVF CI (29,980) was divided by
  a small number of UOW (1).
  The divide has been held using 8bytes work field which is
  divided by 5 bytes field. In this case the heading 3 bytes are
  used for the quotient.
  Internally 29980 is used as 299800 (4 bytes decimal), so that
  the overflow condition happened on 3 bytes quotient field as a
  result of divide.
  As the maximum number of UOW is 32767, 3 bytes length field is
  enough for the value of UOW. The UOW field has been changed
  from 5 bytes to 3 bytes in this apar to avoid the overflow
  condition. The quotient field has changed from 3 bytes to 5
  bytes by this modification.
  
  2.The steps which check if the data value is larger than the Max
  possible number to report have been added for some field in this
  APAR.
  The data value which is larger than the Max possible number to
  report will be indicated with C'***' in FABADA5 reports.
  The modified fields are following.
  
   - DOVF AVG in FREESPACE ANALYSIS
   - DOVF S/D in FREESPACE ANALYSIS
   - DOVF MAX in FREESPACE ANALYSIS
   - DOVF MIN in FREESPACE ANALYSIS
   - IOVF AVG in FREESPACE ANALYSIS
   - IOVF S/D in FREESPACE ANALYSIS
   - IOVF MAX in FREESPACE ANALYSIS
   - IOVF MIN in FREESPACE ANALYSIS
   - SDEV of ACTUAL LENGTH in DB RECORD PROFILE ANALYSIS
   - MAX of DOVF ONLY in DB RECORD PLACEMENT ANALYSIS
   - MIN of DOVF ONLY in DB RECORD PLACEMENT ANALYSIS
   - MAX of IOVF ONLY in DB RECORD PLACEMENT ANALYSIS
   - MIN of IOVF ONLY in DB RECORD PLACEMENT ANALYSIS
  
  The module FABADA5 has been reassembled.
  The macro DA#MDA51 has been modified to change UOW field length
  from 5 bytes to 3 bytes.
  The macro DA5MAIN0 has been modified to add the modification
  history.
  Macros DA5PFSI0 and the macro DA5PFSD0 have been modified to
  proceed the 5 bytes length quotient field and also have been
  modified to indicate with C'***' that the overflow condition
  occurred on corresponded fields.
  Macros DA5PRPR0 and DA5PRPL0 have been modified to indicate
  with C'***' that the overflow condition occurred on corresponded
  fields.
  310Y
  DA#MDA51
  DA5MAIN0
  DA5PFSD0
  DA5PFSI0
  DA5PRPL0
  DA5PRPR0
  FABADA5
  

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:

  UK24391

Modules/Macros

•    DA#MDA51 DA5MAIN0 DA5PFSD0 DA5PFSI0 DA5PRPL0
  DA5PRPR0 FABADA5
  

Fix information

• Fixed component name

  IMS HP FP UTILI

• Fixed component ID

  5655K9400

Applicable component levels

• R310 PSY UK24391

     UP07/04/26 P F704