RE: Performance problem: Loading data via insert
- From: Abhishek Gurung <abhishek.gurung@xxxxxxxxxxx>
- To: Oracle Freelist <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 14 Mar 2014 12:53:52 +0530
Hi Hemant,
Thanks for replying.We are not using any hints as we have decided against them
after checking their pros and cons.There are no triggers on any of these
tables.No this behavior is reported recently after the upgrade of Database.
Strange thing is that all other instances arerunning fine except this.
RegardsAbhishek
Subject: RE: Performance problem: Loading data via insert
Date: Fri, 14 Mar 2014 11:10:02 +0800
From: Hemant-K.Chitale@xxxxxx
To: abhishek.gurung@xxxxxxxxxxx
CC: oracle-l@xxxxxxxxxxxxx
Do have LOGGING / NOLOGGING differently configured in the two reference
environments ? What about APPEND Hint and/or PARALLEL configurations ? Are
there ON INSERT triggers on the table ? What does AWR show about load on the
database and wait times ? Has this been the behaviour since day 1 or is it of
recent origin ? Can you associate it with any recent changes to the database ?
Hemant K Chitale From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Abhishek Gurung
Sent: Thursday, March 13, 2014 7:52 PM
To: Oracle Freelist
Subject: Performance problem: Loading data via insert Hi
We are facing a performance problem but unable to identify where is the problem.
We have a production database server where about 8 database instances of oracle
is running.
Daily we insert in each of these database instances about 1-5 GB of data in
different tables.
All database instances are working fine where we are able to load around 2-3 GB
of data within 1hour except
1 where it is taking about 8 hrs to load only 4 GB of data.
When I try to load the same 4GB of data in another database where only one
instance is running and with
very less configuration as compared to the Production server we were able to
load it in 1hr 45 minutes.
Can anyone suggest how can we proceed to identify the problem?
Regards
Abhishek
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