Cannot download a file blob

Hi all

I created an application that requires downloading and uploading the files.

I created a column in my table "files" as the BLOB type.

I am able to download the file in the DB, and it is saved.

Now, I've created an interactive report to download the file

I followed the following site

http://AWADs.NET/WP/2012/03/12/how-to-download-BLOB-content-as-a-file-using-Oracle-application-express/

But it is throwing following error:

ORA-06502: PL/SQL: digital or value error: character of number conversion error


One thing I observed is that although my column is a blob, in the attributes of the report it shows the Type of column as 'other '.


Kindly help me to solve this problem.

Please use the dbms_lob.getlength () function on your blob data type column. So for your blob column, edit the 'Blob column attributes' under the 'report of the attributes-> column formatting.

SELECT file_id,
  file_name,
  mime_type,
  dbms_lob.getlength(blob_content) download
FROM my_files

Thank you!

JMcG

Tags: Database

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