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POI Command Processors › Benefits of POI › Change the Default Subsystem ID

Change the Default Subsystem ID

The default subsystem ID for all CA OPS/MVS command processors is OPSS. Users can modify their own default subsystem IDs.

To change the default subsystem ID, allocate a ddname of the form OPS$OPSx (where x is any alphabetic character). The CA OPS/MVS product uses the last four characters of this ddname as the default subsystem ID for all CA OPS/MVS command processors (including the OPS/REXX command processors OI and OX).

Example: Change The Default Subsystem ID

TSO users might issue the following command to set the default subsystem ID for their session to OPSA:

ALLOC F(OPS$OPSA) DUMMY

When CA OPS/MVS finds multiple DDs of this form, it uses the first one found in the TIOT.

Note: The order of DDs in the TIOT has no connection to the order in which the TSO ALLOCATE command allocated them.