Oracle Error ORA-16195: DG_CONFIG requires DB_UNIQUE_NAME be explicitly defined

Oracle Error Message

ORA-16195: DG_CONFIG requires DB_UNIQUE_NAME be explicitly defined

Reason for the Error

The DG_CONFIG attribute of the LOG_ARCHIVE_CONFIG parameter can only be used if the DB_UNIQUE_NAME parameter has been explicitly defined.

Solution

Explicitly define a valid DB_UNIQUE_NAME.