RE: Performance problem: Loading data via insert
- From: Abhishek Gurung <abhishek.gurung@xxxxxxxxxxx>
- To: Oracle Freelist <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 14 Mar 2014 12:59:25 +0530
Hi Vijay,
thanks for replying.Yes we have gone through AWR but unable to identify the
problem.The problem is we have a single file containing insert statements that
are inserting data into multiple tablesalso we are not using any selects inside
inserts to insert data in tables.
RegardsAbhishek
Date: Fri, 14 Mar 2014 12:39:57 +0530
Subject: Re: Performance problem: Loading data via insert
From: vijaysehgal21@xxxxxxxxx
To: abhishek.gurung@xxxxxxxxxxx
CC: oracle-l@xxxxxxxxxxxxx
Abhishek,
For the load of data period have you gone through the AWR report to identify
what's going on in the database, also what about the execution plan of the
query in problematic database and other database. Without any of these
information available, it's difficult to tell you what could be the issue.
Regards,
Vijay Sehgal.
On Fri, Mar 14, 2014 at 12:36 PM, Abhishek Gurung <abhishek.gurung@xxxxxxxxxxx>
wrote:
Hi Sameer,
Thanks for your reply.We have already done gone through the process of using
hints and after analysis we decided not to use them.Also my concern is to
identify the problem in database. As we are able to insert data in much less
time in similar environment with much less hardware configuration but in
production it is taking hell lot of time for that particular
database instance every other database instances are running fine.
ReagrdsAbhishek
Date: Fri, 14 Mar 2014 07:42:40 +1100
Subject: Re: Performance problem: Loading data via insert
From: sameer.choudhari@xxxxxxxxx
To: carlos.sierra.usa@xxxxxxxxx
CC: abhishek.gurung@xxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Try tuning your insert statements with hints like PARALLEL NOLOGGING .
On Friday, 14 March 2014, Carlos Sierra <carlos.sierra.usa@xxxxxxxxx> wrote:
Abhishek,
As always, start with the evidence:What facts have you collected? What is AWR
telling you? What are the SQL Traces telling? Which other diagnostics tools
have you used for your case?
Cheers,
Carlos Sierra
blog: carlos-sierra.net
twitter: @csierra_usa
Life's Good!
On Mar 13, 2014, at 6:52 AM, Abhishek Gurung <abhishek.gurung@xxxxxxxxxxx>
wrote:
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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