One note: 9i automatic segment space management does not automate PCTFREE;
that still functions as before. It does cause PCTUSED, FREELISTS, and
FREELIST GROUPS to be ignored, however...
- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
Sent: Tuesday, September 03, 2002 9:48 AM
> time for me to ask the experts again.
>
> My data warehouse will be 9.2, with all locally managed tablespaces. We
> will be following what I have taken to calling the "Goldilocks"
> principle -- that of small, medium and large tablespace extent sizes,
> with variations in that we will separate indexes and data, and will
> have even more separation for our fact tables into partitioned tables
> and tablespaces.
>
> However, now comes the time for me to work out storage clauses. And a
> quick read through the docs leaves me wondering if I should just turn
> on automatic segment-space management and not worry about setting
> PCTFREE, PCTUSED and FREELIST parameters. I can't find any real
> information or bugs on MetaLink either.
>
> Does anyone have any experience, good OR bad, with using this feature?
> If you are doing data warehouse work, what are good values for the
> parameters if I DO use them? One fact table is likely to be highly
> updated (customer info) as we collect more and more specific
> information from customers. The rest will be, as you would expect from
> a DW, mostly inserts.
>
> Help?
>
> Thanks!
>
> Rachel
>
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> Author: Rachel Carmichael
> INET: wisernet100_at_yahoo.com
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Received on Wed Sep 04 2002 - 01:08:21 CDT
