PH07025: IPR UNLOAD PRODUCES NEW "TWIN SEGMENT STATISTICS" REPORT.

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• IPR Unload produces new "Twin Segment Statistics" report.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IMS High Performance Unload for *
  *                 z/OS Version 1 Release 2 (FMID=H1IN120)      *
  ****************************************************************
  * PROBLEM DESCRIPTION: IPR Unload produces new "Twin Segment   *
  *                      Statistics" report.                     *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  This APAR provides the information about twin chain by
  IPR Unload utility.
  

Problem conclusion

Temporary fix

Comments

• IPR Unload has been modified to report the information about
  twin chain in the "Segment Statistics" report.
  
   +--report sample---------------------------------------------+
   |                                                            |
   | TWIN SEGMENT STATISTICS                                    |
   |                                                            |
   |               NUMBER OF     MAX CHAIN       AVG CHAIN      |
   |  SEGMENT         CHAINS        LENGTH          LENGTH      |
   |  -------- ------------- ------------- ---------------      |
   |  ROOTLEV1           N/A                                    |
   |  DEP1LEV2             0             0             0.0      |
   |  DEP2LEV2             0             0             0.0      |
   |  DEP3LEV3           150             2             2.0      |
   |                                                            |
   +------------------------------------------------------------+
  
  ========================
  = DOCUMENTATION CHANGE =
  ========================
  The IBM IMS Database Reorganization Expert for z/OS User's
  Guide Version 4 Release 1 Suffix 6 (SC19-1137-06) should be
  changed as follows:
  ===============================================================
  > Unloading a database
  >> IPR Unload reports
  >>> Segment Statistics report
  
   This report contains information about the segments in
   databases by segment type.
   This report does not show the segment types of a virtual
   logical child.
   For HDAM, PHDAM, or HISAM databases, information about the
   segments in the overflow area or the overflow data set is
   shown by segment type under SEGMENT IN OVERFLOW STATISTICS.
  |For HALDBs, this report is shown for each partition.
  |In addition to the basic information about segments, this
  |report contains the following sections.
  
   :
  
   Variable Length Segment Split Statistics section
     When there is any variable-length segment in a database,
     this section is produced as part of the Segment Statistics
     report. When there is no variable-length segment, this
     section is not printed. This section shows?for each segment
     type?information about segments of split variable-length
     segments (including compressed fixed-length segments).
     This section does not show the segment types of virtual
     logical child or fixed-length segments.
  
  |Twin Segment Statistics section
  |  This section is always produced as a part of the Segment
  |  Statistics report. This section is not printed for HISAM
  |  and SHISAM databases.
  |  This section shows statistics about twin chained segments.
  
   The following figures show examples of Segment Statistics
   reports.
   :
  
   <<< VARIABLE LENGTH SEGMENT SPLIT STATISTICS >>>
     SEGMENT
     :
  
  |TWIN SEGMENT STATISTICS
  |  The twin chain statistics section provides statistics about
  |  twin chained segments:
  |  SEGMENT
  |    The name of the segment.
  |  NUMBER OF CHAINS
  |    The total number of twin chain occurrences for the segment
  |    type. N/A is shown if a twin pointer is not defined for
  |    the segment.
  |  MAX CHAIN LENGTH
  |    The maximum length of the twin chains.
  |  AVG CHAIN LENGTH
  |    The average length of the twin chains.
  
  ================ End of Documentation Change ==================
  

APAR Information

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

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

  UI61004

Modules/Macros

• FABH002  FABH0303 FABH0304 FABH0305 FABH060  FABHC00  FABHDMB
  FABHDMB0 FABHJCB  FABHJCB0 FABHPSL3 FABHPSL4 FABHPSL5 FABHSDB
  FABHSDB0 FABHURG3 FABHURG4 FABHURG5 HPSU015  HPSUPTRW HPSURCBM
  HPSURCTA HPSURDBD HPSURIO0 HPSURPAR HPSURR05 HPSUURG3 HPSUURG4
  HPSUURG5
  

Fix information

• Fixed component name

  IMS HIGHPERF UN

• Fixed component ID

  5655E0600

Applicable component levels

• R120 PSY UI61004

     UP19/01/31 P F901  

Fix is available

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