您的位置:首页 > 数据库 > Oracle

oracle: ocp题解与实验(6/205)

2011-11-08 09:42 411 查看
题目:

Exhibit:



6.You executed the following command to perform a backup of the
USERS tablespace:
RMAN > BACKUP TABLESPACE USERS;
Which type of backup would this command perform?
A. backup set
B. image copy
C. incremental backup
D. None; the user receives an error indicating that the backup type must
be specified.
Answer: A

答案解释:

图片中有一句话:CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default 表明使用的是备份集模式;另外可参考:

CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COPY; # 使用image copies

CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO BACKUPSET; #使用备份集(uncompressed)

可以知道A正确,B错误;对于C中的增量备份不是通过参数指定的,而是命令中指定的,但是命令没有说明是增量备份;D错误;

关于更多RMAN环境参数说明需参考官方资料;
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: