Error while downloading a file via APEX screen

Question

While I try to download a file using the below code;
an HTTP 404 error is coming although the proc is being called and the parameter is correctly being passed.
Please help.
create or replace procedure download_myfile1(p_id in number)
as
v_mime varchar2(255);
v_length number;
v_file_name varchar2(2000);
Lob_loc BLOB;
BEGIN
-- -- Selecting the details from the table whoch contains the extracts
select EXTRACT_FILE,FILE_NAME,dbms_lob.getlength(EXTRACT_FILE) into lob_loc,v_file_name,v_length from table_name where ID = p_id;
-- -- set up HTTP header
-- -- use an NVL around the mime type and
-- if it is a null set it to application/octect
-- application/octect may launch a download window from windows
owa_util.mime_header( 'application/octet', FALSE );
-- set the size so the browser knows how much to download
--v_file_name := substr(v_file_name,1,instr(v_file_name,'.')-1);
htp.p('Content-length: ' || v_length);
-- the filename will be used by the browser if the users does a save as
htp.p('Content-Disposition: attachment; filename="'||v_file_name|| '"');
-- close the headers
owa_util.http_header_close;
-- download the BLOB
wpg_docload.download_file( lob_loc );
end download_myfile1;
It shows a POP up window by which u can save or opens the file. But no pop up displayed in this case.
-Shreya

Answer 1

Hi,
Made the same changes but still getting the same error.
The earlier URL also that I had mentoned would dynamically make this url mentioned by you and then shows the pop up window.
However when I am right clicking on the download link and then clicking 'Save target as' then this error message is provided:
Internet Cannot download [schema name].download_myfile2 from [DNS name]
Internet Explorer was not able to open this Internet Site.The requested site is either unavailable or cannot be found .Please try again.
Please help..
Thanks in Advance ...
Shreya
Edited by: 935203 on Jul 9, 2012 11:58 PM