Enter the name that identifies the database service.
The service name is typically the global database name, which is a combination of the database name ( DB_NAME ) and domain ( DB_DOMAIN ). An example service is sales.us.example.com, where sales is the database name and us.example.com is the domain.
The character length for the service name must be less than 138 characters. The service name can include alpha-numeric characters, underscore (_), pound sign (#), and period (.).
The database service is defined during database creation. If you are not sure what the service is, ask your Database Administrator.
Oracle Net Services Configuration Overview
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