Have you modified your two index_caching init parameters? If not, this can
prove to make some really weird things happen. Also consider first rows to
favor index use.
"Do not criticize someone until you walked a mile in their shoes, that way
when you criticize them, you are a mile a way and have their shoes."
Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax: (707) 885-2275
Fuelspot
73 Princeton Street
North, Chelmsford 01863
-----Original Message-----
Sent: Friday, September 07, 2001 7:56 AM
To: Multiple recipients of list ORACLE-L
I wanted to turn it off in testing so I could try some other indexes as an
alternative. I'm not sure that I trust it to make a good decision.
Even with an alternative index hint, it's not using the index I'm trying to
get it to use, but rather the fast full index scan. I can't see any typo
but maybe it just can't use that index with full full index scan enabled.
That's why I wanted to try and disable it and see what would happen.
CBO does some interesting things. Every time I think I have a handle on
some aspect of it, it changes and starts doing something different.
Thanks for your reply.
Cherie
Jared Still
<jkstill@cybco To: [EMAIL PROTECTED],
[EMAIL PROTECTED]
n.com> cc:
Subject: Re: Fast Full Index
Scan in 8.1.7
09/07/01 12:04
AM
The alternative is probably a full table scan.
Are you sure you want to turn it off?
I think you need to hint your SQL to do that.
Jared
On Thursday 06 September 2001 13:21, [EMAIL PROTECTED] wrote:
> I had been using the FAST_FULL_SCAN_ENABLED initialization parameter
> in
an
> 8.0.4 database.
>
> Apparently this parameter is now obsolete in 8.1.7.2. Seems as though I
> am getting the fast full index
> scans automatically now. I'm not sure if I want them in all cases. Is
> there a way to turn them off?
>
> Thanks,
>
> Cherie Machler
> Oracle DBA
> Gelco Information Network
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