Oracle-L: Re: INDEX move

From: <Rajesh.Rao_at_jpmchase.com>
Date: Wed, 05 Jun 2002 11:43:29 -0800
Message-ID: <F001.004757B8.20020605114329@fatcity.com>

Data and Index segments have different storage and sizing requirements. That's the main reason for them to be put up in different tablespaces.
If all indexes are in a seperate tablespace of their own, one could avoid backing up this tablespace if time and space are a constraint.
The I/O should be evenly distributed across the disks and controllers. It will not help you, if you create a new Index tablespace, and put it on a disk, that is currently experiencing heavy I/O.
Having data and Index on seperate disks will benefit you, depending on the data access patterns. Sequential access might benefit from it, but would not make any difference to random access.

As always, I could stand corrected.

Raj

                                                                                                                     
                    "Seema Singh"                                                                                    
                    <oracledbam_at_ho        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>        
                    tmail.com>            cc:                                                                        
                    Sent by:              Subject:     INDEX move                                                    
                    root_at_fatcity.c                                                                                   
                    om                                                                                               
                                                                                                                     
                                                                                                                     
                    June 05, 2002                                                                                    
                    01:55 PM                                                                                         
                    Please respond                                                                                   
                    to ORACLE-L

Hi
I have few of primary key and unique indexes on main data tablespace.I am thinking that if I moved those indexes into diffrent tablespace then we woudl have some performance gain.If I am not correct let me know please?Is any impact if I move primary key and unique indexes to INDEX tablespace? Thx
-Seema

Send and receive Hotmail on your mobile device: http://mobile.msn.com

--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Seema Singh
  INET: oracledbam_at_hotmail.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L


(or the name of mailing list you want to be removed from).  You may

also send the HELP command for other information (like subscribing).




-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: 
  INET: Rajesh.Rao_at_jpmchase.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L


(or the name of mailing list you want to be removed from).  You may

also send the HELP command for other information (like subscribing).

Received on Wed Jun 05 2002 - 14:43:29 CDT