How can we improve the rebuid script in 10g

Hi
Plateform solaris = SunOS 5.9
current database version is = 9.2.0.7
Our client ir migrating database to oracle 10g. I don't have much knowledge on 10g
for reorg of indexes I have been using following scripts in 9.2.0.7
alter index GMOWNER.INDEX_34FG rebuild tablespace MAINIDX01_MEDIUM;
please suggest if this script will work fine in 10g too. if not what change is required.
is there any 10g feature which make index Rebuild process fast.
Regards
mahesh

If you're rebuilding all the indexes at a time when the database is not doing anything, then you may as well carry on using the same command - it's probably not doing much harm and it might be doing a little good.
If you need the rebuilds to go faster because you have a limited window when the database is idle, the best way to speed up the command is to stop doing it for all indexes except the ones you know are in need of house-keeping for some reason.
If you're talking about just the odd handful of indexes that you can identify as problem indexes because of the nature of the application, you might check to see if [*the coalesce command*|http://jonathanlewis.wordpress.com/2008/09/26/index-analysis/] is more appropriate.
As it stands, your rebuild command locks the underlying tables - you've seen one suggestion to use the ONLINE option, but that does more work because it has to scan the table whilst the older option MAY be able to scan the existing index to build the new copy (online also needs to lock the table briefly twice); you've also seen one suggestion to use a parallel build, but building several indexes concurrently may be more effective than using parallelism to build each in turn, there is no generic strategy that is the best in all circumstances.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
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function(){return A.apply(null,[this].concat($A(arguments)))}
function(){return A.apply(null,[this].concat($A(arguments)))}elemt wrote:
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function(){return A.apply(null,[this].concat($A(arguments)))}
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