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043-002

原创 Linux操作系统 作者:jbymy2000 时间:2012-03-04 09:42:06 0 删除 编辑
2.Exhibit
In your production database, the total waits and the time waited for log
file parallel write are significantly high. While investigating the
reason, you find that there are three redo log groups with two members
in each group, and all redo log members are places on a single physical
disk. What action would you take to minimize the waits?
A. Start the log writer slave processes
B. Increase the number of redo log files
C. Increase the size of the redo log buffer
D. Place the redo log files on the different disks.
E. Increase the number of log writer processes.
Answer:D
把日志建在不同的磁盘上来分散i/o 压力,提高写入速度

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