Knowing the names and locations of the RACF datasets that are currently being used by the system is quite easy.
For this we have to use the command TSO RVARY
RACF DATABASE STATUS:
ACTIVE USE NUM VOLUME DATASET
------ --- --- ------ -------
YES PRIM 1 TSTCT1 SYS1.RACF.PRIMARY
YES BACK 1 TSTDL1 SYS1.RACF.BACKUP
RVARY COMMAND HAS FINISHED PROCESSING.
YES indicates that the dataset is active and therefore in use by the system.
TSTCT1 and TSTDL1 are the volume names where each of the RACF datasets are located.
Issuing the command TSO RVARY is exactly the same thing as issuing the command TSO RVARY LIST.