create a new service

exec dbms_service.CREATE_SERVICE(SERVICE_NAME=>'*******_APP', NETWORK_NAME=>'********_APP')
exec dbms_service.CREATE_SERVICE(SERVICE_NAME=>'*********_DBA', NETWORK_NAME=>'********_DBA')
exec dbms_service.START_SERVICE('**********_APP')
exec dbms_service.START_SERVICE('**********_DBA')