You can use SYSIN statements to provide further input to DFHLSCU, and to
tailor the report that it provides.
If you do not define a SYSIN data set, or SYSIN does not contain any control
statements, default values are assumed. Each control statement must be on
a separate line and must contain no spaces. The SYSIN statements you can code
are as follows.
- JNLTYPE
- This statement indicates the type of journal the data set represents.
Code this statement with one of the following operands:
- SYSTEM
- This data set represents the system log.
- FWDREC
- This data set represents a forward recovery log.
- USRJNL
- This data set represents a user journal or autojournal.
The default is SYSTEM.
- INTERVAL
- This statement permits you to divide the data set into time blocks,
each time block being summarized in the summary report. This provides you
with information allowing you to analyze journaling behavior over different
time segments.
Specify this statement in minutes (0 thru 999999). The default
is 30. A value of 0 indicates that no time-segmenting is to occur and that
the period covered by the entire data set is to be used.
- AKPFREQ
- This statement specifies the activity keypoint frequency. This is relevant
only for calculations of space needed by system logs. It is used to calculate
the size of the CF space or staging data set needed for the system log. The
value here is the AKPFREQ that you intend to use at CICS® Transaction Server for z/OS®, Version 3 Release 1.
Code either
a value of 0, or a value in the range 200 thru 65535. The default is 4000.
- LOGSNUM
- For a CF log stream, this statement specifies the number of log streams
that can use the structure associated with this journal or log. It is used
in the calculation of the INITSIZE and SIZE attributes to include in the CFRM
policy.
Code a value in the range 1 through 512. The recommended range
is 1 through 20. The default is 10.
- TRANSDUR
- This statement specifies the transaction duration which is the execution
time (between syncpoints) of the longest-running transaction that runs as
part of the normal workload. TRANSDUR
is only relevant for system log calculations.
Specify this value in seconds
(0 thru 999999). The default is 3.

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