Tuesday, March 31, 2015

Three dynamic performance views of wait events

Three dynamic performance views of wait events:

V$SESSION_WAIT :-
It displays the events for which sessions have just completed waiting or are currently waiting.

V$SYSTEM_EVENT  :_
It displays the total number of times all the sessions have waited for the events in that view.

V$SESSION_EVENT-:
 It is similar to V$SYSTEM_EVENT, but displays all waits for each session.

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