OCP-V13-705

QUESTION 705

706. You execute the following command to set the redundancy retention policy in Recovery Manager

(RMAN):

RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 3;

Identify the statement that correctly describes the implications of this command.

你通过以下的语句来设置数据库冗余保存策略，

CONFIGURE RETENTION POLICY TO REDUNDANCY 3

确定以下是正确描述该命令的含义的语句

A. when there are already three backups, for the fourth backup RMAN removes the oldest backup

B. When there are already three backups, for the fourth backup RMAN marks the oldest backup as obsolete. 已经备份三个备份机了，如果第四个备份则被RMAN标记为过期的最老的备份

C. the number of backups that are retained is equal to three and it includes full, incremental, and

cumulative backups.

D. when there are already three backup, one of the existing backupsmust be removed manually before

taking the fourth backup.

Correct Answer: B

Section: (none)

Explanation

Explanation/Reference:

答案是 B

超过冗余度的备份，rman会标志为obsolete，除非使用DELETE OBSOLETE来删除