What is a database service?

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What is a database service?

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An Oracle database is represented to clients as a service, i.e., the database performs work on behalf of clients. A single database can be represented as multiple services, and a service can be implemented as multiple database instances. A database service is identified by a service name. A service name is specified by the SERVICE_NAMES parameter specified in the initialization parameter file. By default, the service name of a database is the same as the global database name of the database. The global database name is a name comprising the database name (specified by the DB_NAME initialization parameter) and domain name (specified by the DB_DOMAIN initialization parameter) entered during the database creation. For example, the string sales.us.acme.com represents a service name, where sales is the database name and us.acme.com is the domain name.


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