How to retrieve elapsed time in milisecond using sql query

Hi
Can some one please send the suggestion, how to check the query time in miliseconds.

Its Urgent!

Many Thanks
Anuj

Crystal ball broken today, please elaborate.

My crystal ball returned:


set timing on

Set timing on, tkprof, etc give you times to the centi-second. I doubt very much if a real-life query would have a execution time reproducible to better than that. So my advice is - don't bother.