Open the database properties. For more information see Configuring the Rational DOORS database.
To use the DXL security function, you must be using a Rational DOORS 9.3 or later database server, and the server must be configured to exclude Rational DOORS 9.0, 9.1, and 9.2 clients. To exclude these clients, set the minimum client version on the Login Policy tab of the database properties to 9.3.