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Home -> Community -> Mailing Lists -> Oracle-L -> Re: update 30mil rows
Since you've already dropped the indexes the following might be an option
if you have enough diskspace available...
Rename the existing table to a temporary name Create a new table using "create table <table_name> as select ...", but replace the field you want set to 0. You could probably fiddle with hints like "append" and "parallel" and maybe "nologging" if you want to squeeze some more speed out of it.
I guess the benefit is that if you've got any plans to change storage clauses, etc then you can do those at the same time.
Regards,
Mark.
Gurelei
<gurelei_at_yahoo To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
.com> cc:
Sent by: Subject: update 30mil rows
root_at_fatcity.c
om
26/02/2003
08:26
Please respond
to ORACLE-L
Hi all:
I need to update every row 30mil-rows table. I have dropped the indices and running the update in parallel:
update /*+ parallel (degree 8) */ table_name set field1=0;
Is there anything else I could to to speed up this process. I don't think I can do an update in nologging mode. I'm running 8.1.7.4
thanks for any advice.
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Gurelei INET: gurelei_at_yahoo.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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 Tue Feb 25 2003 - 15:59:29 CST
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