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042-174

原创 Linux操作系统 作者:jbymy2000 时间:2012-03-15 19:54:37 0 删除 编辑
174: You are working on a test database where instance recovery takes a considerable amount of time. How can reduce the recovery time? (Choose two)
A. By multiplexing the control files
B. By multiplexing the redo log files
C.By decreasing the size of redo log files
D.By configuring mean time to recover (MTTR) to a lower value
E.By setting the UNDO_RETENTION parameter to a higher value
答案:CD
Editor’s notes::decrease the size of redo log files means that the time of roll forward may decrease.So ,Answer C is write.

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