By default, users can use all TSO/E commands from the TSO/E Session Manager. You can use Session Manager exits to restrict all users, or specific users, from using any TSO/E command.

If users at your installation primarily use the TSO/E Session Manager to interact with TSO/E, you may want to restrict the commands they can use under Session Manager. For example, you could restrict the use of TRANSMIT and RECEIVE if spool space at your installation is limited.

One problem with using Session Manager to restrict the use of commands is that the commands are restricted only when users use Session Manager. Because users can issue TSO/E commands from other environments, such as ISPF/PDF and TSO/E READY mode, using Session Manager to restrict the commands users can issue is effective only if users do all of their work under Session Manager.

For more information, see Writing Session Manager exits.