试题详情
- 单项选择题 View the Exhibit to examine the output of the DBA_OUTSTANDING_ALERTS view. After 30 minutes, youexecuted the following command: SQL> SELECT reason,metric_value FROM dba_outstanding_alerts; REASON METRIC_VALUE------------------------------ ---------------------- Tablespace [TEST] is [28 perce 28.125 nt] fullWhat could be the reason for the elimination of the other rows in the output（）
A、An Automatic Workload Repository snapshot has been taken recently.
B、The non-threshold-based alerts are transferred to DBA_ALERT_HISTORY.
C、The threshold alerts conditions are cleared and the alerts are transferred to DBA_ALERT_HISTORY.
D、The threshold alerts related to database metrics are permanently stored in DBA_ALERT_HISTORY but notthe threshold alerts related to instance metrics
- C
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