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What is the correct order of steps to perform an online database backup? a: alter database begin backup; b: alter database end backup; c: Back up the database datafiles. d: Back up the archive log files. e: alter system switch logfile;
Correct Answer: E
Explanation/Reference: Explanation: (link) To back up online read/write tablespaces in an open database: 1. Use the DBA_DATA_FILES data dictionary view to identify all of the data files in the tablespace. 2. ALTER TABLESPACE users BEGIN BACKUP; 3. Back up the online data files of the online tablespace with operating system commands. 4. ALTER TABLESPACE users END BACKUP; 5. ALTER SYSTEM ARCHIVE LOG CURRENT; Archive the unarchived redo logs so that the redo required to recover the tablespace backup is archived.