Re: Query execution time

  • From: Stephane Faroult <sfaroult@xxxxxxxxxxxx>
  • To: oracle-l@xxxxxxxxxxxxx, Rick Stephenson <RStephenson@xxxxxxxx>
  • Date: Fri, 12 Nov 2004 10:00:58 +0100

 Apart from tracing (which with such a rate of execution is not highly
advisable) the best you can do is probably collect those aggregate values at
regular intervals, compute differences and work out averages on a per
interval basis. You will still have a smoothed curve, but less so. If you
have a single statement to monitor and use the V$SQL ADDR as key, you can
probably do it at a resonably high rate.

Stephane Faroult 

RoughSea Ltd 

On Thu, 11 Nov 2004 13:49 , Rick Stephenson <RStephenson@xxxxxxxx> sent:

I have a query that has been executed 750,000 times and want to know what
the maximum elapsed time is for that query. The v$sql view gives me an
elapsed_time column, but that will only allow me to produce an average
elapsed time based on the number of times a query has been executed. Is
there a way to determine the maximum elapsed time for a query?


Rick Stephenson

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