Syntax:
ALTER SERVER  server_name
    OPTIONS (option [, option] ...)

Alters the server information for server_name, adjusting the specified
options as per the CREATE SERVER command. See [HELP CREATE SERVER]. The
corresponding fields in the mysql.servers table are updated
accordingly. This statement requires the SUPER privilege.

URL: http://dev.mysql.com/doc/refman/5.1/en/alter-server.html

