Segment Count Summary report
This report provides the balance between input and output segment occurrences of each segment type.
The following figure shows an example of the Segment Count Summary report for a PHDAM database.
All values in the report are decimal, and each line describes one segment type in the database.
IMS HIGH PERFORMANCE LOAD PAGE: 1
5655-M26 08/13/2023 04.28.37
"SEGMENT COUNT SUMMARY"
DBNAME = PHDV0300 PARTITIONS = 2 ORG = PHDAM ACCESS METHOD = OSAM
*** SEGMENT COUNT ACROSS ALL PARTITIONS PROCESSED ***
DELETED BY DELETED BY
SEGNAME LV DSG PARENT READ RELOADED RANDOMIZER USER EXIT
-------- -- --- -------- ------------- ------------- ------------- -------------
ROOTLEV1 01 01 2,000 2,000 0 N/A
DEP1LEV2 02 01 ROOTLEV1 2,000 2,000 0 N/A
DEP2LEV2 02 01 ROOTLEV1 2,000 2,000 0 N/A
DEP3LEV3 03 01 DEP2LEV2 4,000 4,000 0 N/A
DEP4LEV4 04 01 DEP3LEV3 8,000 8,000 0 N/A
DEP5LEV2 02 01 ROOTLEV1 2,000 2,000 0 N/A
DEP6LEV3 03 01 DEP5LEV2 4,000 4,000 0 N/A
DEP7LEV4 04 01 DEP6LEV3 8,000 8,000 0 N/A
DEP8LEV4 04 01 DEP6LEV3 8,000 8,000 0 N/A
DEP9LEV5 05 01 DEP8LEV4 16,000 16,000 0 N/A
-------- -- --- -------- ------------- ------------- ------------- -------------
TOTAL 56,000 56,000 0 N/A
*** SEGMENT COUNT IN HDAM OVERFLOW AREA ***
SEGNAME OCCURRENCES PERCENTAGE
-------- ------------- ----------
ROOTLEV1 0 0.0
DEP1LEV2 0 0.0
DEP2LEV2 0 0.0
DEP3LEV3 2,000 50.0
DEP4LEV4 8,000 100.0
DEP5LEV2 2,000 100.0
DEP6LEV3 4,000 100.0
DEP7LEV4 8,000 100.0
DEP8LEV4 8,000 100.0
DEP9LEV5 16,000 100.0
-------- -------------
TOTAL 48,000 This report consists of two parts: the segment count in the entire database part, and the segment count in the HDAM, PHDAM, or HISAM overflow area part.
The following list describes each item in the Segment Count Summary report. The items are common
to HDAM, HIDAM, HISAM, and SHISAM databases, except that the overflow area statistics items are
available only for HDAM, PHDAM, and HISAM databases.
- SEGNAME
- The name of the segment.
- LV
- The hierarchical level of the segment.
- DSG
- The data set group number.
- PARENT
- The name of the parent segment.
- READ
- The number of segment occurrences that are read by IMS HP Load for this database.
- RELOADED
- The number of segment occurrences that IMS HP Load reloads for this database.
- DELETED BY RANDOMIZER
- The number of segment occurrences that are deleted because of a return code of 4 from the HDAM randomizer.
- DELETED BY USER EXIT
- The number of deleted segment occurrences due to a return code 8 or 12 from the user exit routine.
- ILDS RECORDS
- The number of ILE records in the ILDS for this partition.
The SEGMENT COUNT IN THE HDAM OVERFLOW AREA part contains the following items:
- OCCURRENCES
- The number of occurrences of the segment.
- PERCENTAGE
- The percentage of the occurrences in the overflow versus the entire occurrence of this segment type.
The following figure shows an example of the report for a PHIDAM database. The SEGMENT COUNT IN PHIDAM OVERFLOW AREA part is not included in this report.
IMS HIGH PERFORMANCE LOAD PAGE: 1
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"SEGMENT COUNT SUMMARY"
DBNAME = PHIV0100 PARTITIONS = 5 ORG = PHIDAM ACCESS METHOD = ESDS
*** SEGMENT COUNT ACROSS ALL PARTITIONS PROCESSED ***
DELETED BY DELETED BY
SEGNAME LV DSG PARENT READ RELOADED RANDOMIZER USER EXIT
-------- -- --- -------- ------------- ------------- ------------- -------------
ROOTLEV1 01 01 10 10 N/A N/A
DEP1LEV2 02 01 ROOTLEV1 10 10 N/A N/A
DEP2LEV2 02 01 ROOTLEV1 10 10 N/A N/A
DEP3LEV3 03 01 DEP2LEV2 20 20 N/A N/A
DEP4LEV4 04 01 DEP3LEV3 40 40 N/A N/A
DEP5LEV2 02 01 ROOTLEV1 10 10 N/A N/A
DEP6LEV3 03 01 DEP5LEV2 20 20 N/A N/A
DEP7LEV4 04 01 DEP6LEV3 40 40 N/A N/A
DEP8LEV4 04 01 DEP6LEV3 40 40 N/A N/A
DEP9LEV5 05 01 DEP8LEV4 80 80 N/A N/A
-------- -- --- -------- ------------- ------------- ------------- -------------
TOTAL 280 280 N/A N/AThe following figure shows an example of the report when the SEQERROR control statement is specified for bypassing key sequence errors.
IMS HIGH PERFORMANCE LOAD PAGE: 1
5655-M26 08/13/2023 05.29.47
"SEGMENT COUNT SUMMARY"
DBNAME = PHIV2000 PARTITIONS = 3 ORG = PHIDAM ACCESS METHOD = ESDS
*** SEGMENT COUNT ACROSS ALL PARTITIONS PROCESSED ***
DELETED BY DELETED BY
SEGNAME LV DSG PARENT READ RELOADED RANDOMIZER USER EXIT
-------- -- --- -------- ------------- ------------- ------------- -------------
ROOTSEG 01 01 15 15 N/A N/A
DEP1 02 01 ROOTSEG 16 16 N/A N/A
DEP2 03 01 DEP1 16 16 N/A N/A
DEP3 04 01 DEP2 16 16 N/A N/A
-------- -- --- -------- ------------- ------------- ------------- -------------
TOTAL 63 63 N/A N/A
*** SEGMENT COUNT IN KEY SEQUENCE ERROR ***
KEY SEQERROR ERROR OUTPUT IN SEQERROR DS
SEGNAME OCCURRENCES PERCENTAGE OCCURRENCES PERCENTAGE
-------- ------------- ---------- ------------- ----------
ROOTSEG 0 0.0 N/A N/A
DEP1 1 6.3 N/A N/A
DEP2 1 6.3 N/A N/A
DEP3 1 6.3 N/A N/A
-------- ------------- ---------- ------------- ----------
TOTAL 3 4.8 N/A N/A - SEGNAME
- The name of the segment.
- KEY SEQUENCE ERROR OCCURRENCES
- The number of occurrences of key sequence errors for this segment type.
- KEY SEQUENCE ERROR PERCENTAGE
- The percentage of the occurrences of key sequence errors within the entire occurrences of this segment type.
- OUTPUT IN SEQERROR DS OCCURRENCES
- The number of segment occurrences saved in the SEQERROR data set for this segment type.
- OUTPUT IN SEQERROR DS PERCENTAGE
- The percentage of segment occurrences saved in the SEQERROR data set within the entire occurrences of this segment type.