Re: Insert

From: james ellis <jellis24_gso_at_yahoo.com>
Date: Tue, 27 Mar 2001 06:04:10 -0800
Message-ID: <F001.002D8BDF.20010327053021@fatcity.com>

Yes inserting into a table with an index does cause degradation in the process, but it is very unrealistic to drop and rebuild the index every time you do an insert, unless it is a batch process that runs when no other processing is being done. Also, deleting from the index causes the index to be very fragmented and eventually you will need to rebuild it to reclaim unused space.

james

• Kevin Kostyszyn <kevin_at_dulcian.com> wrote:
  > Hi DBA's,
  > One of my developers just asked me a question, and
  > honestly I don't know
  > what he's talking about. But, it made me think of
  > my own that I do know the
  > answer to or at least I used to:( Anyway, when
  > doing an insert into a
  > table, doesn't it increase performance to delete any
  > indexes, do the insert
  > then rebuild the index. Or do you just have to
  > disable the index? Also,
  > does this work the same for delete? Also...is there
  > anyway to guestemate
  > how long an insert is going to take?
  >
  > Sincerely,
  > Kevin Kostyszyn
  > DBA
  > Dulcian, Inc
  > www.dulcian.com
  > kevin_at_dulcian.com
  >
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  > Author: Kevin Kostyszyn
  > INET: kevin_at_dulcian.com
  >
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: james ellis
  INET: jellis24_gso_at_yahoo.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Received on Tue Mar 27 2001 - 08:04:10 CST