630.Which two statements are true about encrypting RMAN backup? (Choose two.)
A. The transparent encryption of backups uses the encryption wallet
B. The database uses the same encryption key for every encrypted backup
C. The password encryption of backups only uses the password while creating and restoring backup
D. If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backups.
Answer: AC
A. The transparent encryption of backups uses the encryption wallet
B. The database uses the same encryption key for every encrypted backup
C. The password encryption of backups only uses the password while creating and restoring backup
D. If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backups.
Answer: AC
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。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2120581/ ，如需转载，请注明出处，否则将追究法律责任。
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