Title: Adhoc queries and limiting the amount of records queried...

Hi all

 

System is Siebel

 

Ok I got a couple of tables about 6 GB big, up to 10 million rows.

 

Some of the tables come out of the box with 30+ indexes, now for those not aware Siebel does not support the dropping of any indexes.

 

I do though know what my indexes is that are hit the most and was thinking of partitioning them and or maybe the tables.

 

Firstly

 

If I was to partition only the table, Would I have to make any changes to the currently indexes other than rebuilding them.

 

Second. Is it possible for to only partition a selected index.

Here I keep on seeing local and global partitions - indexes. From what I can determine Global is bad news.

 

How do I do local, what consideration are there.

 

Some of the tables/indexes considered is orders, orderliness, shipments, shipments lines, all with well over 5 million records each.

 

The queries is not date specific but more account or contact specific for the order if that's helps.

 

I was considering partitioning on order_id but again it looks best to use hash partitioning since there is not real way of saying the queries will always go this way.

 

Basically trying to reduce the work for Oracle to get to data. All my queries is already using the best possible index.

 

Comment, suggestions

 

thx

 

George

________________________________________________

George Leonard

Oracle Database Administrator

Dimension Data (Pty) Ltd

(Reg. No. 1987/006597/07)

Tel: (+27 11) 575 0573

Fax: (+27 11) 576 0573

E-mail:[EMAIL PROTECTED]

Web:   http://www.didata.co.za

 

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