本文通过展示一个具体的数据库备份实例，详细解析了备份过程中关键指标的意义，并着重讨论了如何从输出中推断出FRAdisk组是否存在异步IO瓶颈。
90.View the exhibit and examine the output. Which statement can be an inference from the output?
Exhibit:
A. The FRA disk group has an asynchronous I/O bottleneck
B. The least number of I/Os are performed on the last data file in the list
C. The number of times that the backup or restore process directed the OS to wait until an I/O was
complete is the highest for the last data file in the list
D. The number of times that the backup or restore process made an OS call to poll for I/O completion in
Nonblocking mode is the least for the FRA disk group
Answer: A
扫一扫
459
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
