【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:<br /> 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（）<br /> <img src="https://img.ppkao.com/2018-08/chenfang/2018080210091777267.jpg" /><p> View the Exhibit to examine the output of the DBA_OUTSTANDING_ALERTS view. After 30 minutes, youexecuted the following command:<br /> SQL> SELECT reason,metric_value FROM dba_outst
A、A.An Automatic Workload Repository snapshot has been taken recently.
B、B.The non-threshold-based alerts are transferred to DBA_ALERT_HISTORY.
C、C.The threshold alerts conditions are cleared and the alerts are transferred to DBA_ALERT_HISTORY.
D、D.The threshold alerts related to database metrics are permanently stored in DBA_ALERT_HISTORY but notthe threshold alerts related to instance metrics
查看正确答案
