单选题You define an alert to be raised when the USERS tablespace usage has reached 80%of the total space. Which area would you refer to， in order to confirm that the alert has been raised due the event？（）Athe alert.log fileBthe DBA_ALERTS viewCthe Database Control Home pageDthe Database Control performance pageEthe Database Control Maintenance page
单选题
You define an alert to be raised when the USERS tablespace usage has reached 80%of the total space. Which area would you refer to， in order to confirm that the alert has been raised due the event？（）
A
the alert.log file
B
the DBA_ALERTS view
C
the Database Control Home page
D
the Database Control performance page
E
the Database Control Maintenance page
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