RE: Re: how to get oracle to ignore an index

From: Bobak, Mark <Mark.Bobak_at_il.proquest.com>
Date: Fri, 6 Feb 2004 13:56:11 -0500
Message-ID: <4C9B6FDA0B06FE4DAF5918BBF0AD82CF03B45225@bosmail00.bos.il.pqe>

And, you can't get much more reliable than Jonathan....

-----Original Message-----
From: Jared.Still_at_radisys.com [mailto:Jared.Still_at_radisys.com] Sent: Friday, February 06, 2004 1:51 PM
To: oracle-l_at_freelists.org
Subject: Re: Re: how to get oracle to ignore an index

You may have seen it in an article.
The reliability of information depends on the source.

Jared

<ryan.gaffuri_at_cox.net>
Sent by: oracle-l-bounce_at_freelists.org
02/06/2004 10:28 AM
Please respond to oracle-l

=20

        To:     oracle-l_at_freelists.org
        cc:=20
        Subject:        Re: Re: how to get oracle to ignore an index

i cant reproduce the data for you. its internal. I tested it repeatedly. = I=20
was very careful about the hint.=20

select /*+ index(<index_name>) */=20
select /*+ index(<table> <index_name>) */

Tried it repeatedly. I've seen it before. Sorry, I cant show you the = data,=20
etc... I could have swarn I read in the docs that hints are just=20 directives and oracle does not have to use them? I cant find it right = now.=20
Am I wrong? I'm pretty sure I have seen that several times.=20

>=20

> From: "Jonathan Lewis" <jonathan_at_jlcomp.demon.co.uk>
> Date: 2004/02/06 Fri PM 12:52:47 EST
> To: <oracle-l_at_freelists.org>
> Subject: Re: Re: how to get oracle to ignore an index

>=20
>=20

> Why do you think that Oracle can choose to ignore hints ?
> Do you have reproducible example that proves the point ?

>=20

> Bear in mind that a comment that looks like
> a hint is only a hint if it is used correctly in
> the right context.

>=20
>=20

> Regards

>=20

> Jonathan Lewis
> http://www.jlcomp.demon.co.uk

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Received on Fri Feb 06 2004 - 12:56:11 CST