Creating data sets common to all CICS regions, DFHCOMDS job

You can use the DFHCOMDS job to delete and recreate the following data sets common to all CICS® regions:

Name
Data set
DFHCSD
CICS system definition.
SYSIN
SYSIN data set.
Note:
The CICS-supplied DFHCOMDS job creates one of each of these data sets common to all CICS regions. If you use separate copies of any of these data sets for each CICS region, you should move and edit the appropriate statements into the DFHDEFDS job. For further information about creating multiple copies of these data sets, see Creating several copies of the DFHCSD and SYSIN data sets.

The DFHCOMDS job comprises five job steps:

  1. DELETE deletes the data sets.
  2. DEFCSD defines the VSAM cluster for the CICS system definition data set, dsindex.DFHCSD, where dsindex is defined by the DSINFO parameter of DFHISTAR.
  3. INITCSD Initializes the CICS system definition data set.
  4. DEFRPIDC defines the VSAM cluster for ONC RPC.
  5. DEFSYSIN creates the SYSIN PDS and copies the following modules from the hlq.SDFHSAMP library:
    DFH$SIPA DFH$SIPD DFH$SIPT DFH$SIP1
    DFH$SIP2 DFH$SIP5 DFHRCNO DFHRCYES

Creating several copies of the DFHCSD and SYSIN data sets

The CICS-supplied DFHCOMDS job creates one of each of the DFHCSD and SYSIN data sets common to all CICS regions. If you use separate copies of any of these data sets for each CICS region, you should:

You should move and edit the appropriate data set statements before you create copies of the DFHDEFDS job for each CICS region. When you run DFHISTAR to create the new copies of the DFHDEFDS job, it substitutes your values for the CICS region qualifier (&REGNAME) and index (&INDEX) into the data set names.

For example: If you intend using a copy of the DFHCSD data set for each CICS region, you should copy the job steps DELCSD, DEFCSD, and INITCSD from the DFHCOMDS job to the DFHDEFDS job. You should also add the symbol &REGNAME for the qualifier to the name of the DFHCSD data set to give &DSINDEX.CICS&REGNAME.DFHCSD. If you edit DFHISTAR to select the DFHDEFDS job to be copied, and specify the following DSINFO parameter:

DSINFO userid.CICSTS31.CICS H3P060 3390 IDA .

when you run the DFHDEFDS job, it creates the DFHCSD data set called userid.CICSTS31.CICS.CICSIDA.DFHCSD for the CICS region identified by the qualifier IDA. If you change the SELECT and DSINFO parameters of DFHISTAR (to specify an appropriate new job name and qualifier for another CICS region), you can create several copies of the DFHDEFDS job to create DFHCSD and SYSIN data sets for each CICS region.

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