OCP-1Z0-053-V12.02-236题

236.Your database is running in ARCHIVELOG mode, and the database is open. You execute an RMAN

backup and specify the KEEP clause.

Which components are backed up when this option is specified?

A. only the control file, the current SPFILE, and data files

B. only the current SPFILE and data files if autobackup is disabled

C. only the data files and the archived redo logs

D. the control file, current SPFILE file, data files, and archived redo logs

Answer: D

答案解析：

参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmcncpt.htm#BRADV002

CONFIGURE CONTROLFILE AUTOBACKUP ON

BACKUP DATABASE PLUS ARCHIVELOG;

通过以上，可以备份控制文件，spfile，数据文件和归档日志文件。

The RMAN command for making backups is BACKUP. The RMAN BACKUP command supports backing up the following types of files:

• Datafiles and control files

• Server parameter file

• Archived redo logs

• RMAN backups

Although the database depends on other types of files, such as network configuration files, password files, and the contents of the Oracle home, you cannot back up these files with RMAN. Likewise, some features of Oracle Database, such as external tables, may depend upon files other than the datafiles, control files, and redo log. RMAN cannot back up these files. Use some non-RMAN backup solution for any files not in the preceding list.

When you execute the BACKUP command in RMAN, the output is always either one or more backup sets or one or more image copies. A backup set is an RMAN-specific proprietary format, whereas an image copy is a bit-for-bit copy of a file. By default, RMAN creates backup sets.