Establishing Signon Processing › Signon Processing Execution Flow › Checking for Duplicate Users

Checking for Duplicate Users

The SET SITE CHECK DUPLICATE USER command controls whether duplicate signons are allowed. You can also set this option through the command SET COMMAND SITE OPTIONS, which displays a fill-in screen (see Setting Site Options). The format of the SET SITE CHECK DUPLICATE command is as follows:

                              {YES}
                              {NO }
SET SITE CHECK DUPLICATE USER {ON }
                              {OFF}

YES or ON

Specifies that multiple sessions for the same user ID are allowed. A second signon to CA Ideal by the same user ID is successful, terminating the original session.

Note: This is only effective within a single CICS region. YES is not recommended for a MRO environment with multiple Application Owning Regions. External security software can be used to ensure unique CICS users.

NO or OFF

Specifies that CA Ideal allows duplicate signons. If your external security system ensures unique signons, you should set the CHECK DUPLICATE option (SET SITE CHECK DUPLICATE USER) to NO or OFF.