多项选择题
Which two statements are true about the Automatic Database Diagnostic Monitor （ADDM）（）
A.The ADDM requires at least four AWR snapshots for analysis.
B.The ADDM runs after each AWR snapshot is collected automatically by MMON.
C.The results of the ADDM analysis are stored in the Automatic Workload Repository （AWR）.
D.The ADDM analysis provides only diagnostic information but does not provide recommendations.
E.The ADDM calls other advisors if required， but does not provide recommendations about the advisors.
相关考题
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单项选择题
WhichstatementistrueabouttheManageabilityMonitor（MMON）backgroundproces（）
A.It transfers statistics from memory to disk at regular intervals.
B.It coordinates the rebalance activity for disk groups when ASM is used.
C.It communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.
D.It performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance. -
单项选择题
Your database is functional with a peak load for the last one hour. You want to preserve theperformance statistics collected during this period to be used for comparison when you analyze theperformance 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. -
单项选择题
In your database instance， the STATISTICS_LEVEL initialization parameter is set to BASIC. What isthe impact of this setting（）
A.Optimizer statistics are collected automatically.
B.Only timed operating system （OS） statistics and plan execution statistics are collected.
C.The snapshots for the Automatic Workload Repository （AWR） are not generated automatically.
D.Snapshots cannot be collected manually by using the DBMS_WORKLOAD_REPOSITORY package.
E.The Oracle server dynamically generates the necessary statistics on tables as part of query optimization.
