Have you considered dropping the indexes before import, then rebuilding parallel
nologging?
Ron Thomas
Hypercom, Inc
[EMAIL PROTECTED]
Each new user of a new system uncovers a new class of bugs. -- Kernighan
[EMAIL PROTECTED]
Sent by: To: [EMAIL PROTECTED]
[EMAIL PROTECTED] cc:
Subject: would imp speed affect by
setting indexes to NOLOGGING?
05/27/2003 11:19
AM
Please respond to
ORACLE-L
Hi,
Would the imp speed increase by setting all indexes to NOLOGGING?
I have a schema with 249 tables and 442 indexes and I have a weekly schema
refresh program running as this:
exp schema from Server A (Oracle 8173 on Sun Solaris box)
ftp dump file from Server A to Server B, the dump file size is 1.9GB after
compression
imp schema on Server B (also Oracle 8173 on Sun Solaris box), the imp
usually take about 7 hours.
With everything elase the same, last week I changed all indexes in the
schema on Server A to "NOLOGGING" (they were all set to "logging" before),
hoping to increase the speed of imp on Server B. Because I thought the
"create index ... nologging" would reduce redo log writing, therefore
increase the imp speed quite a bit (there are some big indexes there!). But
this morning I found the imp still took about the same time as before,
although I was told that the system I/O seems to be lower.
Does anyone have similar experience? TIA.
Guang
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: gmei
INET: [EMAIL PROTECTED]
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: [EMAIL PROTECTED] (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).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Ron Thomas
INET: [EMAIL PROTECTED]
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: [EMAIL PROTECTED] (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).
