Replacing HSMACT as the high-level qualifier for activity logs

The MCVTACTN bytes can be modified to change the high-level qualifier of the DASD activity logs created by DFSMShsm. DFSMShsm supplies a high-level qualifier of HSMACT. Users who have a controlled data set naming convention that is not compatible with this qualifier can change the 7-byte MCVTACTN to create a high-level qualifier of their own choosing.

The MCVTACTN can contain any valid data set name high-level qualifier comprising from 1 to 7 characters. The high-level qualifier should be left justified. If shorter than 7 bytes, the unwanted bytes should be blanked out.

The following example causes DFSMShsm to create its DASD activity logs with the high-level qualifier of SHORT:

PATCH .MCVT.+321 'SHORT ' VERIFY(.MCVT.+321 'HSMACT')

Note: The 6-character qualifier HSMACT is being replaced by a 5-character qualifier SHORT, so SHORT is followed by a blank to erase the letter T from HSMACT.