How abuout:
create table ani_prx_new parallel (degree 5) nologging
as
( select * from ani_prx
minus
select * from from bo_owner.ani_prx
where ba_recode='V')
/
I assume that the description of the bo_owner.ani_prx is identical
to the description of the ani_prx. Furthermore, a bitmap index on
ba_owner.ani_prx(ba_recode) would speed things up quite a bit under
favorable circumstances.
--
Mladen Gogala
Oracle DBA
> -----Original Message-----
> From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On
> Behalf Of rgaffuri_at_cox.net
> Sent: Wednesday, September 17, 2003 11:45 AM
> To: Multiple recipients of list ORACLE-L
> Subject: tuning a massive delete
>
>
> i have a table with 27 million records that is about 1.2 GB
> in size. I have a 'staging table' with 18 million records. 16
> million records have a 'delete' flag. I have indexed the
> column in staging with a delete flag. both tables have
> indexed primary keys. Is the following my fastest option or
> would an 'IN' be faster? Im concerned because this has been
> running for a while and have alot of consistent gets but no
> 'writes' yet which tells me its still building the join. Our
> sort_area_size is rather small and Im not allowed to change
> it which tells me we are swapping to the temp tablespace.
>
> anyway to speed this up? or is this the fastest we got?
>
>
> create table ani_prx_new parallel (degree 5) nologging
> as select *
> from ani_prx b
> where not exists (select 1 from bo_owner_stage.ani_prx a
> where ba_reccode = 'V' and a.cusip = b.cusip and a.fund_no =
> b.fund_no and a.add_cymd = b.add_cymd)
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: <rgaffuri_at_cox.net
> INET: rgaffuri_at_cox.net
>
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--
Author: Mladen Gogala
INET: mladen_at_wangtrading.com
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
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Received on Wed Sep 17 2003 - 11:59:40 CDT
