OCP-1Z0-053-V12.02-671题

671.Examine the following RMAN command:

RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON;

RMAN> BACKUP DATABASE PLUS ARCHIVELOG;

Which prerequisite must be met before accomplishing the backup?

A. Provide a password for the encryption

B. Set up an Oracle wallet for the encryption

C. No setup is required as it is a default encryption method

D. Both Oracle wallet and password must be set up for the encryption

Answer: B

答案解析:

参考:加密备份:http://blog.csdn.net/rlhua/article/details/12312463

可使用以下三种方法之一对备份进行加密:
• 透明加密:此方法使用wallet,是默认模式。
• 口令加密:此加密方法依赖于口令,不需要配置wallet。若要还原,必须知道用于备份的口令。
• 双模式加密:可同时使用透明加密和口令加密。若要还原,可使用透明模式或口令模式。
如果通常将备份还原到本地站点,但偶尔也会将备份传送到其它站点,则这种类型的加密十分有用。

CONFIGURE ENCRYPTION FOR DATABASE ON;

At this stage, all RMAN backup sets created by this database use transparent encryption by default.

官方参考: http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmconfa.htm#CHDEDGHA

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