If your installation has RACF® active, you can use RACF commands to define users to both TSO/E and RACF, and maintain those definitions in the RACF data base. The RACF commands are:

• ADDUSER TSO – To add a new user to TSO/E.
• ALTUSER TSO – To change information about a previously-defined user.
• ALTUSER NOTSO – To remove a user from TSO/E.
• LISTUSER TSO – To list information from the RACF data base about a user.

Using the RACF commands to add and maintain users has the following advantages:

• You can use one set of commands to add, change, or delete information about TSO/E user IDs and RACF security.
• You need maintain only one data set, the RACF data base, for user information.

For more information about RACF commands, see z/OS Security Server RACF Command Language Reference. For information about adding users to the RACF data base, see z/OS Security Server RACF Security Administrator's Guide.