OCP 1Z0 053 218

218.Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the 
DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement: 
ALTER TABLESPACE data1 BEGIN BACKUP; 
While you are performing the backup, an error occurs that causes the instance to terminate abnormally. 
Which statement about the DATA1 tablespace is true? 
A. The DATA1 tablespace is automatically taken out of backup mode when the instance aborts. 
B. If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when 
the database is opened. 
C. If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when 
the database is mounted. 
D. If you restart the database, the database will not be opened. 
Answer: D 

ORA-10873: file string needs to be either taken out of backup mode or media recovered

Cause: An attempt was made to open a database after an instance failure or SHUTDOWN ABORT interrupted an online backup.

Action: 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.