hello dba's

i have added a new service using the pl/sql package dbms_service.
execute dbms_service.create_service('INS','INS');
execute dbms_service.start_service('INS');

the service name is present in v$services and dba_services.

But once i bounce the db, i dont find the service INS running.
there is only entry in dba_services, but not in v$services.
and i will 've to start this service manually.

what is tht am supposed to do, to start the service INS automatically along with startup of db. ??