Download from BFILE problem

Question

Hello,
I have the following problem:
1. I can upload PDF files into BFILE(s) - in the DATA_PUMP_DIR (dba_directories table)
2. The uploaded file can be opened/viewed with Adobe Acrobat Reader.
3. I use a stored procedure do download the PDF files from my browser.
4. the download works ok but the file can no longer be opened/viewed using Adobe Acrobat Reader.
5. I did a hex compare of 2 pdf files (the uploaded file and the downloaded file) and I think it is a CR vs CRLF conversion problem.
I am using Oracle 10g XE on a Linux box and Windows as a client. The upload/download is part of a APEX application.
This is the code used to download the BFILE:
Note: v_mime is set to 'application/pdf'.
        x_bfile := BFILENAME ('DATA_PUMP_DIR', p_file);
        DBMS_LOB.fileopen (x_bfile, DBMS_LOB.LOB_READONLY);
        -- 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( nvl(v_mime,'application/octet'), FALSE );
        -- the filename will be used by the browser if the users does a save as
        htp.p('Content-Disposition:  attachment; filename="'||substr(v_file_name,instr(v_file_name,'/')+1)|| '"');
        -- close the headers
        owa_util.http_header_close;
        BEGIN
            LOOP
                DBMS_LOB.READ (x_bfile,
                               n_size,
                               n_pos,
                               x_buffer);
                HTP.prn (UTL_RAW.cast_to_varchar2 (x_buffer));
                -- increment number of bytes read
                n_pos := n_pos + n_size;
            END LOOP;
        EXCEPTION
            WHEN NO_DATA_FOUND THEN
                NULL;
        END;Any suggestions?
Thanks,
Catalin Florean.

Answer 1

You could try using wpg_docload.download_file instead of htp.prn.
Here is part of the procedure I use for downloading MP3 files from BFILES:
                owa_util.http_header_close;
                dbms_lob.createTemporary(TBlob, true);  
                dbms_lob.open(Lob_loc, dbms_lob.file_readonly);
                dbms_lob.loadfromfile( TBlob, Lob_loc, dbms_lob.getlength(Lob_loc) );
                dbms_lob.fileclose(Lob_loc);
                -- download the BLOB           
                wpg_docload.download_file( TBlob );    
                dbms_lob.freeTemporary( TBlob );You would replace my Lob_loc variable with your x_bfile.