Comments on: Slow Oracle BLOB upload with C# .NET and how to speed up. http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/ .NET C#, Oracle, SQL Server and all other stuff that gives live a sense. Sun, 03 Jan 2010 22:45:39 +0000 http://wordpress.com/ hourly 1 By: Usman http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1323 Usman Thu, 13 Mar 2008 07:33:18 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1323 Thank you for the article. It really helped me. Is there a way to callan 'Oracle form' from a C# program? (just like we spawn another .EXE program) Pls. guide, Regards Usman Thank you for the article. It really helped me.

Is there a way to callan ‘Oracle form’ from a C# program? (just like we spawn another .EXE program)

Pls. guide,

Regards

Usman

]]> By: Dave Langer http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1316 Dave Langer Fri, 15 Feb 2008 15:14:56 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1316 Wonderful, just Wonderful... I canot thank you enough for the example.! Im using Oracle.DataAccess.dll version 2.102.2.20 And I read the entire Oracle Data Provider for .Net Developer's Guide and I was triying to upload pics through an SP and never succided, and never found a working example until now.. a few minutes and was able to upload blobs, Im using the "slow" example as I don't need to upload big files, just some faces pics for a Human Resources System that Im building. Thanks Again Wonderful, just Wonderful… I canot thank you enough for the example.! Im using Oracle.DataAccess.dll version 2.102.2.20 And I read the entire Oracle Data Provider for .Net Developer’s Guide and I was triying to upload pics through an SP and never succided, and never found a working example until now.. a few minutes and was able to upload blobs, Im using the “slow” example as I don’t need to upload big files, just some faces pics for a Human Resources System that Im building. Thanks Again

]]> By: Kuldeep Bishnoi http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-895 Kuldeep Bishnoi Thu, 13 Sep 2007 14:09:55 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-895 Hi Gerhard, I have Oracle.DataAccess.dll version 2.102.2.20. I thought of trying this. I was using 9912 KB file It takes Slow method 076331.6852 millesec Fast method 129401.37280000001 millesec with 10000 bytes buffer 639528.18910000008 millesec with 1000 bytes buffer 073209.825900000011 millesec with 100000 bytes buffer 064778.7519 1000000 millesec with bytes buffer 128183.551 2097152 millesec with bytes (2MB) buffer So I guess it depends on the buffer size and may be optimum buffer size depends on the network bandwidth between where the code is being executed and where the database is. So seems like oracle has fixed it but the question is how did they come so close to the optimum buffer size if they fixed it like you did. Thanks Hi Gerhard,

I have Oracle.DataAccess.dll version 2.102.2.20.
I thought of trying this. I was using 9912 KB file
It takes
Slow method
076331.6852 millesec
Fast method
129401.37280000001 millesec with 10000 bytes buffer
639528.18910000008 millesec with 1000 bytes buffer
073209.825900000011 millesec with 100000 bytes buffer
064778.7519 1000000 millesec with bytes buffer
128183.551 2097152 millesec with bytes (2MB) buffer
So I guess it depends on the buffer size and may be optimum buffer size depends on the network bandwidth between where the code is being executed and where the database is.

So seems like oracle has fixed it but the question is how did they come so close to the optimum buffer size if they fixed it like you did.
Thanks

]]> By: Gerhard Stephan http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-23 Gerhard Stephan Thu, 07 Sep 2006 05:43:05 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-23 Hi Andrew, I re-tested my piece of code. But the results are the same: Slow upload took : 35,453125 seconds Fast upload took : 3,359375 seconds I'm using Oracle DLL Version 1.102.2.20. I would recommend you to install the latest Oracle Driver which can be downloaded from: http://www.oracle.com/technology/software/tech/windows/odpnet/utilsoft.html It's also important that you use the version that is compiled for VS 2005. Oracle delivers both versions within that distribution. So you have to choose the right one. Hope that I could help. Cheers Gerhard Hi Andrew,

I re-tested my piece of code. But the results are the same:

Slow upload took : 35,453125 seconds
Fast upload took : 3,359375 seconds

I’m using Oracle DLL Version 1.102.2.20.

I would recommend you to install the latest Oracle Driver which can be downloaded from: http://www.oracle.com/technology/software/tech/windows/odpnet/utilsoft.html

It’s also important that you use the version that is compiled for VS 2005. Oracle delivers both versions within that distribution. So you have to choose the right one.

Hope that I could help.
Cheers

Gerhard

]]> By: Andrew Harvey http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-22 Andrew Harvey Thu, 07 Sep 2006 05:26:13 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-22 That should read the Oracle.DataAccess.dll That should read the Oracle.DataAccess.dll

]]> By: Andrew Harvey http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-21 Andrew Harvey Thu, 07 Sep 2006 05:22:33 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-21 I just tried this with Visual Studio 2005 and v1.0.3705 of the Oracle.Access.dll with the following results Slow upload took : 2.25 seconds Fast upload took : 5.078125 seconds I guess the slow upload problem is fixed in the latest version cheers Andrew I just tried this with Visual Studio 2005 and v1.0.3705 of the Oracle.Access.dll with the following results

Slow upload took : 2.25 seconds
Fast upload took : 5.078125 seconds

I guess the slow upload problem is fixed in the latest version

cheers
Andrew

]]> By: Gerhard Stephan http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-14 Gerhard Stephan Tue, 08 Aug 2006 06:25:21 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-14 Hi Joe - I'm not sure what you want me to post. It's a C# problem and I don't have any PL SQL Scripts for it. Are you looking for the DDL file? Which error do you get? Cheers Gerhard Hi Joe –

I’m not sure what you want me to post. It’s a C# problem and I don’t have any PL SQL Scripts for it. Are you looking for the DDL file?

Which error do you get?

Cheers
Gerhard

]]> By: Joe http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-13 Joe Mon, 07 Aug 2006 23:59:26 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-13 Could you please post the PL/SQL SP that you used for this test? I am trying to do this too but am getting an error and unsure how i have to change the script. thanks. Could you please post the PL/SQL SP that you used for this test? I am trying to do this too but am getting an error and unsure how i have to change the script. thanks.

]]> By: AJ’s blog » Blog Archive » Is memory shuffling the culprit? http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-8 AJ’s blog » Blog Archive » Is memory shuffling the culprit? Wed, 19 Jul 2006 18:35:17 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-8 [...] It was just a guess, yet Gerhard proved that it actually did solve the problem. If you are interested in the Oracle specifics I recommend reading Gerhards post… . [...] [...] It was just a guess, yet Gerhard proved that it actually did solve the problem. If you are interested in the Oracle specifics I recommend reading Gerhards post… . [...]

]]> By: Carl about the Oracle Database » Blog Archive » Slow Oracle BLOB upload with C# .NET and how to speed up. http://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1 Carl about the Oracle Database » Blog Archive » Slow Oracle BLOB upload with C# .NET and how to speed up. Tue, 02 May 2006 12:54:25 +0000 https://jachman.wordpress.com/2006/04/26/slow-oracle-blob-upload-with-c-net-or-how-to-fasten-it/#comment-1 [...] Slow Oracle BLOB upload with C# .NET and how to speed up. [...] [...] Slow Oracle BLOB upload with C# .NET and how to speed up. [...]

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