Re: Heisenberg and measurement intrusion....

That is bogus beyond belief. The Heisenberg Uncertainty Priciple mainly invoved predicting the position of an electron around an atomic nucleus. Even a single photon of light (the mechanism of "observing" / measuring the electron's position) would radically offset the electron, so you'd never know where it was at before the "measuring" photon hit it.

If the Measurement / Measured relationship is on the scale of Photon / Electron, then there's reason to be concerned. However, realistically, the amount of heat extracted from a person's body to expand the mercury in a thermometer to measure that person's temperature introduces no error in the measured temperature.

Unless your database monitoring tool is more like a sledgehammer than a stethoscope, you're OK.

Of course, that's IMHO.

Jack C. Applewhite - Database Administrator Austin (Texas) Independent School District 512.414.9715 (wk) / 512.935.5929 (pager)

 I'll just sit back in the shade while everyone gets laid.  That's what I call Intelligent Design. -- God ("Origin of Species": Chris Smither)

"Ted Coyle" <oracle-l_at_webthere.com>

Sent by: oracle-l-bounce_at_freelists.org
07/31/2007 03:38 PM
Please respond to
oracle-l_at_webthere.com

To
"'oracle-l'" <oracle-l_at_freelists.org>

cc

Subject
Heisenberg and measurement intrusion....

I'm on an Oracle performance project and a project participant made a statement regarding measurement intrusion.

Is the statement below accurate?
"So the Heisenberg uncertainty principle mandates we run without
monitoring
as a baseline."

I responded with a wikipedia link which I'll send later, but I'd like to get
opinions first. :)

Regards,
Ted

--
http://www.freelists.org/webpage/oracle-l




--
http://www.freelists.org/webpage/oracle-l