OCP-1Z0-052-V8.02-20题

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20. You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows:

Warning (%): 90

Critical (%): 95

Which background process is responsible for issuing alerts when the threshold is crossed?

A.System monitor (SMON)

B.Process monitor (PMON)

C.Memory manager process (MMAN)

D.Manageability Monitor process (MMON)

Answer: D

答案解析：

可管理性监视器进程(MMON)，可执行各种与可管理性相关的后台任务，例如：

• 每当给定的度量超过其阈值时发出预警

• 通过衍生附加进程（MMON 从属进程）获取快照

• 捕获近期已做修改的SQL 对象的统计值

The manageability monitor process (MMON)performs many tasks related to the Automatic Workload Repository (AWR). For example, MMON writes when a metricviolates its threshold value, taking snapshots, and capturing statistics value for recently modified SQL objects.

官方参考：http://docs.oracle.com/cd/E11882_01/server.112/e40540/process.htm#BABJAIBD