Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


SQL SSIS to Oracle CLOB Performance Issue..


SQL SSIS to Oracle CLOB Performance Issue..

Author
Message
dave-dj
dave-dj
SSC-Addicted
SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)

Group: General Forum Members
Points: 438 Visits: 1149
Hi

I'm attempting to push data from SQL via SSIS DT_TEXT to an oracle CLOB field, but performance is utterly horrendous.

It's currently migrating the data at 400 rows per min.

my requirement is to migration 5 million rows - so approximately 210 hours at present - which is not do-able.

I've taken an average row size and set the default buffer max rows. I'd also set out with the intention of using Attunity drivers, but CLOB is not supported in SQL 2008 R2.

Has anyone else pushed data to oracle and do you have any performance tuning tips /ideas I can try?

as always - your time and help are greatly appreciated.

_____________________________________________________________________________
MCITP: Business Intelligence Developer (2005)
dave-DBA
dave-DBA
Forum Newbie
Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)

Group: General Forum Members
Points: 2 Visits: 12
I'm trying to do exactly the same thing and I'm also experiencing horrendous write speeds into Oracle when writing a CLOB through SSIS.

I've been looking everywhere and can't find any good information on this.

Does anyone have any ideas?

Thanks,

David
dave-dj
dave-dj
SSC-Addicted
SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)SSC-Addicted (438 reputation)

Group: General Forum Members
Points: 438 Visits: 1149
Hi dave.

We used SQL 2012 with the oracle attunity 2.0 data connector in the end.

It's still not what I would call fast but we got our data migration down to around 7 hours.... So if you can look at using the above.

Hope that helps you.

_____________________________________________________________________________
MCITP: Business Intelligence Developer (2005)
dave-DBA
dave-DBA
Forum Newbie
Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)Forum Newbie (2 reputation)

Group: General Forum Members
Points: 2 Visits: 12
Hi,

Thanks for your reply. I'm using SQL Server 2012 and Attunity's Oracle destination but i'm only getting a throughput of about 100 rows / sec when writing a CLOB. This still seems pretty slow. What sort of speeds are you getting?

Thanks,

Dave
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search