Jared, That is correct the fields that are changed is known before going to this point.
Bryan P.S. I just want to say thank you for all the responses to this question. We are still talking about the issue, but I am thankful for the input. -----Original Message----- Sent: Thursday, May 29, 2003 2:10 PM To: Multiple recipients of list ORACLE-L dunno about that. I was making the assumption that *which* columns changed was already known. This would require testing by someone familiar with the data. Jared "Jamadagni, Rajendra" <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 05/29/2003 10:24 AM Please respond to ORACLE-L To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject: RE: Which method is more efficient Jared, Agreed, but what about the resources needs to find _which_ column changed ?? Would that offset the extra redo generated? Heck, I'd just generate the update statements based on two tables to _only_ update the changed columns. It is pretty easy, if both tables have _same_ columns ... Raj ---------------------------------------------------------------------------- ---- Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art ! -----Original Message----- Sent: Wednesday, May 28, 2003 6:15 PM To: Multiple recipients of list ORACLE-L There are easier ways to test redo generation than mucking about with logminer. Update only the column that changes and check redo generation: 15:06:09 rsysdevdb.radisys.com - [EMAIL PROTECTED] SQL> @t1 [ much stuff deleted ] -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Rodrigues, Bryan INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).