585.What type of backup is stored in a proprietary RMAN format?
A. Backup set
B. Image copy
C. Backup section
D. Backup group
Answer: A
答案解析：
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/glossary.htm#BRADV90108
backup set
A backup of one or more data files, control files, server parameter files, and archived redo log files. Each backup set consists of one or more binary files. Each binary file is called a backup piece. Backup pieces are written in a proprietary format that can only be created or restored by RMAN.
Backup sets are produced by the RMAN BACKUP command. A backup set usually consists of only one backup piece. RMAN divides the contents of a backup set among multiple backup pieces only if you limit the backup piece
size using the MAXPIECESIZE option of the ALLOCATE CHANNEL or CONFIGURE CHANNEL command.