After you have planned the roles to create and the relationships among them, configure your system for user-defined roles with the max roles enabled per user configuration parameter.
The maximum number of roles that a user can activate per user session is 127. The default value is 20. The minimum number of roles, which is 10, includes the system roles that come with Adaptive Server.
The maximum number of roles that can be activated server-wide is 992. The first 32 roles are reserved for Sybase system roles.