Re: Two indexes same columns

I agree, there is no benefit, but it perfectly allowed to create as many indexes on the same columns, as you wish. May be some DBA performance is evaluated based on 'used db space' :)

Igor Neyman, OCP DBA
Perceptron, Inc.
(734)414-4627
ineyman_at_perceptron.com

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Friday, June 29, 2001 11:57 AM

>
>
> No, there would be no benefit and it probably wouldn't be allowed anyway
unless
> you reversed the columns in the 2nd index.
>
> Regards,
> Mike Hately.
>
>
>
>
> |--------+----------------------->
> | | Connie |
> | | Milliken |
> | | <cemail_at_sprin|
> | | tmail.com> |
> | | |
> | | 06/29/01 |
> | | 04:46 PM |
> | | Please |
> | | respond to |
> | | ORACLE-L |
> | | |
> |--------+----------------------->
> >----------------------------------------------------------|
> | |
> | To: Multiple recipients of list ORACLE-L |
> | <ORACLE-L_at_fatcity.com> |
> | cc: (bcc: Mike Hately/ETECH) |
> | Subject: Two indexes same columns |
> >----------------------------------------------------------|
>
>
>
>
> If there is a primary key on a table (which inherently builds an index),
> is it still necessary for performance to build a seperate index on the
> same columns as those identified in the primary key or is the index
> generated by the primary key sufficient?
>
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> Author: Connie Milliken
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Igor Neyman
  INET: ineyman_at_perceptron.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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