Oracle Error Message
ORA-10873: file string needs to be either taken out of backup mode or media recovered
Reason for the Error
An attempt was made to open a database after an instance failure or SHUTDOWN ABORT interrupted an online backup.
Solution
If the indicated file is not a restored backup, then issue the ALTER DATABASE END BACKUP command and open the database. If the file is a restored online backup, then apply media recovery to it and open the database.