The -gn server option sets the initial database server multiprogramming level.
By default, the network database server automatically adjusts the server multiprogramming level in response to changes in
the server's workload. You can manually override the setting of the multiprogramming after a network database server has started
by using the sa_server_option system procedure and the CurrentMultiprogrammingLevel parameter. See sa_server_option system procedure.
With personal servers, dynamic adjustment of the multiprogramming level is not supported and you cannot change the server's
multiprogramming level after the server has been started.