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Rollback Seg for Import [message #58446]

Wed, 27 August 2003 07:15

Nagesh Babu D
Messages: 1
Registered: August 2003

Junior Member

Hi,

Is there any way to assign specific big rollback segment for an import process to speed up. I know, "sql> set transaction use rollback segment segment_name; at session level"

How can i achive this for an import ?

Thanks,
Nagesh

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Re: Rollback Seg for Import [message #58448 is a reply to message #58446]

Wed, 27 August 2003 09:27

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

i dont think so.
Only way to make it happen is to make One big RBS online and all other rbs OFFLINE! which i beleive, u dont want to do.
to speed up import 
1. u can set your BUFFER to a higher value
2. import only table data and NOT their indexes.
   recreate the indexes later.
   this will also save your UNDOSEGMENT space

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Re: Rollback Seg for Import [message #58449 is a reply to message #58446]

Wed, 27 August 2003 09:31

Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille

Senior Member
Account Moderator

what i meant is ,
drop ur indexes before you do the import.
import only the data.
recreate the indexes later

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