How to check the "average time WAITED.

I find huge "log file sync" v$ session events.
and I want to check the «average time waited to review»
but where and how to find the total "wait time" event? (time waited way = time / waiting time)

Query V$ SYSTEM_EVENT where event = "synchronize file journal." However, this gives you cumulative statistics (TIME_WAITED, TIME_WAITED_MICRO, TOTAL_WAITS, AVERAGE_WAIT) since the Instance was started.

For hourly statistics, look at the AWR reports, if you Pack diagnosis.

(Or write your own scripts to retrieve v $ SYSTEM_EVENT and compare the numbers every hour)

Tags: Database

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