单项选择题
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（）
单项选择题 Examine the command： SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）； Which statement describes the effect of the above command（）
多项选择题 Whichtwostatementsaretrueaboutstandarddatabaseauditing（）