OCP 052考试详解：1Z0-V8.02-第44题
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44. Your database is functional with a peak load for the last one hour. You want to preserve the performance statistics collected during this period to be used for comparison when you analyze the performance of the database in the future.
What action would you take to achieve this task?
A.Insert finding directives for ADDM tasks in the future.
B.Create a baseline on a pair of snapshots spanning the peak-load period.
C.Decrease the snapshot interval in the AWR to collect more snapshots during the peak-load period.
D.Set the snapshot retention period in the Automatic Workload Repository (AWR) to zero to avoid
automatic purging of snapshots.
Answer: B
答案解析：
题问：你想保留数据库最后一个小时的峰值负载，此期间的性能统计分析，以便在将来用户数据库的性能比较，采取什么措施来实现?
A,针对以后ADDM任务出入寻找指令;
B,创建一个基线，一对在峰值负载期间快照。
C,在高峰负荷期间，减少在AWR快照时间间隔，以收集更多的快照。
D,自动负载信息库(AWR)快照保留期限设置为零，以避免自动清除快照
