ORA-16053:DB_UNIQUE_NAME string is not in the Data Guard Configuration Cause: The specified DB_UNIQUE_NAME is not in the Data Guard
Configuration. Action: Ifthe DG_CONFIG attribute of the LOG_ARCHIVE_CONFIG parameter
is enabled, you must specify a valid DB_UNIQUE_NAME. The list of valid DB_
UNIQUE_NAMEs can be seen with the V$DATAGUARD_CONFIG view. This
problem can also occur when specifying a non-standby destination with an DB_
UNIQUE_NAME attribute that does not match the DB_UNIQUE_NAME
initialization parameter for the current instance.