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-- Regards Jonathan Lewis http://www.jlcomp.demon.co.uk The educated person is not the person who can answer the questions, but the person who can question the answers -- T. Schick Jr One-day tutorials: http://www.jlcomp.demon.co.uk/tutorial.html ____Iceland__November (tbc) ____Belgium__November (EOUG event) ____UK_______December (UKOUG conference) Three-day seminar: see http://www.jlcomp.demon.co.uk/seminar.html ____USA__October ____UK___November The Co-operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html "Howard J. Rogers" <hjr_at_dizwell.com> wrote in message news:3f83d530$0$29410$afc38c87_at_news.optusnet.com.au...Received on Fri Oct 10 2003 - 10:12:13 CDT
> Kurt-Erich Finger wrote:
>
> Neither does switching on archiving in itself generate extra redo.
It merely
> means that a copy of a log is taken once it has been switched away
from.
> The switching away from it in the first place still only happens
because
> the log gets full... and that's only possible if redo is being
generated.
>
There is the detail that CREATE TABLE AS SELECT is automatically nologging if the database is noarchivelog mode - the same may be true of indexes by now, but I don't recall testing it - so a switch from noarchivelog to archivelog could easily result in extra redo being generated.