There are no restrictions on the data set names you choose for CICS® data sets, other than MVS™ constraints. In the examples in this book, hlq is the high-level qualifier, and the DD name is the lowest level. If you are running multiple CICS regions, and especially if you are running CICS with XRF, you can use the CICS APPLID as a third level qualifier.
You should use the CTGI naming convention, as in System/390 MVS Sysplex Application Migration. For example, if CICSHTH1 is the APPLID, the data set name for the CSD would be:
DFHCSD DD DSN=CICSTS31.CICS.CICSHTH1.DFHCSD,DISP=SHR
The CTGI naming convention is a recommended example of a naming convention that you can use for CICS 4-character names, and is based on the 4-character CTGI symbol, where:
Where names are allowed to be up to eight characters long, as for CICS APPLIDs, the general recommendation is that the letters CICS are used for the first four characters, particularly for production regions.
If the data set is shared between an active CICS region and an alternate CICS region, use the generic APPLID; but if the data set is unique to either the active or the alternate CICS region, use the specific APPLID. For information about actively and passively shared data sets, see the CICS System Definition Guide.
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