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question on v$system_event
I have question about stats from v$system_event. i just checked on one of db
SELECT EVENT,AVERAGE_WAIT
FROM V$SYSTEM_EVENT
WHERE EVENT LIKE 'db file s%';
EVENT AVERAGE_WAIT
db file sequential read 1159.27
db file scattered read .15
are these stats okay ?
table scans are cheaper v/s index scan or i am reading it wrong
thanks gc
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