V$REQDIST

This view lists statistics for the histogram of shared server dispatcher request times, divided into 12 buckets, or ranges of time. The time ranges grow exponentially as a function of the bucket number.

Column	Datatype	Description
BUCKET	NUMBER	Bucket number: 0 - 11; the maximum time for each bucket is (4 * 2^N)/100 seconds
COUNT	NUMBER	Count of requests whose total time to complete (excluding wait time) falls in this range