The Sequential Subset Statistics report contains statistics
that are useful in determining how much relative space in the root
addressable area needs to be allocated to each subset.
The following two figures show examples of Sequential
Subset Statistics reports.
Note: When IDTYPE=X is specified on the FABITAB macro statement
as input for the generation of the Sequential Subset Randomizer, the values
in the subset ID fields are described as hexadecimal values using
two lines. For example, the subset-ID values for FKD1 are described
These values are X' E2', X'E2',
The SS-STATS routine prints a table
containing one table entry for each subset with the following information
on the HSSRSTAT data set:
The relative subset number.
The number of database roots in the subset.
The total number of data bytes and prefix bytes in all database
segments that belong to the subset.
This number includes only database segments of the first data
If segments are compressed, this number reflects the data length
of the compressed segments (when stored on DASD).
The length of segment prefixes is included in this figure.
The first 83 bytes of the subset ID value printed in EBCDIC or
in hexadecimal according to the value of IDTYPE= keyword on the FABITAB
The SS-STATS routine prints a second table where the number
of root segments and the number of data bytes are expressed as the
percentage of all databases.
The SS-STATS routine also prints
how many database roots are orphans. An orphan is a root segment which
does not belong to any subset. The number of orphans should be zero,
if the SSRGEN specifications (as input for the generation of the Sequential Subset Randomizer) have been