Oracle Error Message
ORA-16052: DB_UNIQUE_NAME attribute is required.
Reason for the Error
DB_UNIQUE_NAME attribute was not specified. The value of the LOG_ARCHIVE_DEST_n parameter for each remote redo transport destination must contain the DB_UNIQUE_NAME attribute if the LOG_ARCHIVE_CONFIG parameter value contains the DG_CONFIG attribute.
Solution
Use the DB_UNIQUE_NAME attribute to specify the DB_UNIQUE_NAME for the destination.