Extracting Files from Oracle clob column using c#/VB.NET.

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Hello All,
I need some help in extracting images from oracle clob column using C#/VB.NET. Basically I have a oracle table which contains student name as varchar2 and one clob column which contains some binary data (image/pdf files). I have to extract that files from table to disc. Any help from your side is highly appreciated.

Regards,
Sunil Tiwari.
[Emailid-Deleted]

Posted 31-Jan-13 23:15pm

Sunil Tiwari

Updated 31-Jan-13 23:44pm

Abhishek Pant

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Jörgen Andersson 2-Feb-13 15:38pm

CLOB is for storing characters, not binaries. Have you written it wrong and it is actually a BLOB field?
Or are you encoding the binaries to text? (for example base64) And in this case WHY?
Or has someone f***ed up?

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Dave Kreskowiak · Answer 1 · 2013-02-01T05:25:00

Solution 1

Soooo...what did you do to get the files in there in the first place?? The process would be exactly the same, only in reverse. BTW, this is implementation specific! There's more than one way to get a file into a column in a database.

Posted 1-Feb-13 5:25am

Dave Kreskowiak

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Sunil Tiwari 4-Feb-13 0:16am

My Query is quite different..... I have a oracle table which contains colb column in table. I know that clobs are image files [JpegInTiff] format which I want to extract on disc.

Dave Kreskowiak 4-Feb-13 8:15am

Again, what did you do to put the files in that column in the first place?? You just do the steps in the opposite order, of course, accounting for writing files instead of reading them.