OCP 19c 認(rèn)證1Z0-083考試題庫(kù)（第2題）（2020版）-CUUG內(nèi)部學(xué)員版083題庫(kù)解析
2、Choose three. In which three situations can you use threshold server-generated alerts to help diagnose and fix problems?
A) when free space in a dictionary managed tablespace falls below a specified percentage
B) when free space in a locally managed tablespace falls below a specified percentage
C) when the total number of locked user account exceeds a specific value
D) when the number of logons per second exceeds a specific value
E) when a resumable statement is suspended
F) when the total number of logons exceeds a specific value
Answer ：ABF
(解析：有關(guān) server-generated alerts 的考題以前考的比較多。該考題的答案更加廣泛，比較難。 用戶(hù)鎖的數(shù)量 oracle 應(yīng)該是不會(huì)去關(guān)注的。)
非閾值預(yù)警直接進(jìn)入 DBA_ALERT_HISTORY，閾值預(yù)警進(jìn)入 DBA_OUTSTANDING_ALERTS 清空后進(jìn)入 DBA_ALERT_HISTORY。 Oracle 只提供預(yù)警，不會(huì)自動(dòng)處理。只有管理員看到信息后處理，或達(dá)不到預(yù)警條件后消失。