Using the RACF® database split/merge/extend utility, IRRUT400, you can split a single RACF database into two or more data sets, merge two or more data sets of the RACF database together into one or more data sets, or copy a RACF database from one type of device to another. In the process, IRRUT400 physically reorganizes the RACF profiles and compresses the RACF database.

For information about how to run IRRUT400, see z/OS Security Server RACF System Programmer's Guide.