Function Based indexes in 10g - setting up function based indexes
- From: "Spears, Brian" <BSpears@xxxxxxxxxxxxxxxxx>
- To: "Oracle-L" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 15 Dec 2005 15:25:15 -0500
Function Based indexes in 10g.
Anybody know if there is more to activating function based indexes in
10g. Not sure if till need the rewrite parameters
1. create the function based indexes
2. analyze the table and indexes
3.QUERY_REWRITE_ENABLED=TRUE
QUERY_REWRITE_INTEGRITY=TRUSTED
2 indexes
1 based on a trim(column)
1 based on a trunc(column)
Back in my mind, I thought there was something else to do to activate
the QUERY_REWRITE_ENABLED.
anyone esle share their fun getting these functional indexes to be
activated in the explain plan?
Thanks
brian
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin Closson
Sent: Wednesday, December 14, 2005 11:36 AM
To: Oracle-L
Subject: RE: Lets load test
SAN, DAS or NAS ?
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ethan Post
Sent: Wednesday, December 14, 2005 8:13 AM
To: kutrovsky.oracle@xxxxxxxxx
Cc: oracle-l
Subject: Re: Lets load test
I have a benchmark script I would like you to try, will send you
the attachment in a seperate email. Be interested in seeing the numbers,
it is very easy to run. I will post the script on the web when I get a
chance for everyone.
-Ethan
On 12/14/05, Christo Kutrovsky <kutrovsky.oracle@xxxxxxxxx>
wrote:
I have a relativelly fast machine for testing.
It's a 4 cpu XEON 3.6 ghz with 1 mb of cache
16 gb of ram
and a lot of fast storage.
It's running RedHat linux 4 64 bit with 64 bit Oracle
10g and ASM.
Throw your ideas if you would like to see something
tested, it's
sitting idle right now.
I just finished setting it up, so i am running some very
raw tests.
For example, I created a 3.68 gb table with ~40m rows
from
dba_objects. Exact size is:
3'959'422'976 bytes
38'653'952 rows
It's gething full scanned for 5.05 cpuseconds. (482008
logical reads,
no physical).
If anyone wants to see something let me know. There's
500 gb of
storage available.
--
Christo Kutrovsky
Senior Database/System Administrator
The Pythian Group
--
//www.freelists.org/webpage/oracle-l
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