OCP 1Z0 053 87

87.You want to perform an RMAN backup of database as a copy. Which two factors will you consider 

while performing the backup operation? (Choose two). 

A. The backup as copy can only be taken to disk 

B. The backup as copy can only be taken to tape 

C. Backup can be performed only when the instance is shutdown 

D. Backup will constitute all used and unused blocks in the database 

Answer: AD

http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsynta007.htm#RCMRF90029

AS COPY

Creates image copies (rather than backup sets). An image copy is a byte-for-byte identical copy of the original file. You can create image copy backups of data files, data file copies, and archived redo log files. Image copy files can only exist on disk. When using incrementally updated backups, the level 0 incremental must be an image copy backup. By default,  BACKUP  generates backup sets. You can change the default backup type for disk backups to image copies using the  CONFIGURE DEVICE TYPE ... BACKUP TYPE TO COPY  command. RMAN chooses a location for the copy according to the following rules, listed in order of precedence: FORMAT  specified on  BACKUP  command for the object being backed up FORMAT  specified for the  BACKUP  command fileNameConversionSpec  setting for  BACKUP  command CONFIGURE CHANNEL integer ... FORMAT CONFIGURE CHANNEL DEVICE TYPE ... FORMAT Platform-specific default  FORMAT  (which includes a  %U  for generating a unique file name) You can create and restore image copy backups with RMAN or use a native operating system command for copying files. When you use RMAN, copies are recorded in the RMAN repository and are more easily available for use in restore and recovery. Otherwise, you must use the  CATALOG  command to add the user-managed copies to the RMAN repository so that RMAN can use them. You cannot make a copy of a backup set, although you can make an image copy of an image copy. To back up a backup set, use  BACKUP BACKUPSET .