ORA-16815: incorrect redo transport setting for AlternateLocation for standby database "string"
Cause: The Data Guard broker detected that the redo transport setting for the standby database regarding its AlternateLocation property value is incorrect. The incorrect setting could be one of the following: (1) the AlternateLocation property is empty but the log transport to the standby database has an ALTERNATE setting; (2) the AlternateLocation property is not empty but the log transport to the standby database has no ALTERNATE setting; (3) the AlternateLocation property does not match the ALTERNATE setting in the redo transport. The mismatch may include service string, directory specification of the alternate location, or the DB_UNIQUE_NAME attribute; (4) the log_archive_dest_state_n parameter corresponding to the alternate location is not set to ALTERNATE; (5) the flash recovery area is being used by the standby database for archived logs, but the redo transport to the standby database still has an ALTERNATE setting for the AlternateLocation. Data Guard broker logs provide more details on which of the above cases causes the error.
Action: Reenable the primary database to clear the error.
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