多选题Which two statements are true about alerts（）AClearing an alert sends the alert to the alert history.BResponse actions cannot be specified with server-generated alerts.CThe nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view.DServer-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.
多选题
Which two statements are true about alerts（）
A
Clearing an alert sends the alert to the alert history.
B
Response actions cannot be specified with server-generated alerts.
C
The nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view.
D
Server-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.
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