Q9. Which three statements are true about connection strings and service names used to connect to an Oracle database instance?
Q9. Which three statements are true about connection strings and service names used to connect to an Oracle database instance?
- (A). A single database instance can support connections for multiple service names.
- (B). A service name is created by a listener.
- (C). A single connection string can refer to multiple database instances.
- (D). A connection string including a service name must be defined in the cnsnames.ora file.
- (E). A connection string must include the SID of a database Instance.
- (F). Different connection strings in the same tnsnames.ora file can contain the same service name, host and port parameters.
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