Oracle OCP 19c 认证1Z0-083考试题库(第21题)
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我要咨询Oracle OCP 19c 认证1Z0-083考试题库(第21题)-CUUG内部学员版083题库解析
21、Which three are true about monitoring waits for sessions and services? (Choose three.)
A. V$SESSION_EVENT displays all waits for all past and existing sessions if the wait has occurred at least once for a session.
B. V$SERVICE_EVENT displays all waits for all services if the wait has occurred at least once for a service.
C. V$SESSION_WAIT _CLASS displays waits broken down by wait class only for waiting sessions.
D. V$SESSION_WAIT and V$SESSION both contain details of the event on which a non-waiting session last waited.
E. V$SESSION_EVENT displays all waits for all past sessions if the wait has occurred at least once for a session.
F. V$SESSION_WAIT and V$SESSION both contain details of the event on which a session is currently waiting.
