Can wpg_docload work with the embedded plsql gateway?

Question

Hi,
Looking at all the sample code with wpg_docload.download_file. Put the following in a plsql region, but it does not work. Is it due to my running with the embedded plsql gateway, rather than http server and mod_plsql?
Here's the code. The file exists and is a small 213-byte file.
declare lob_loc bfile;
v_length integer;
fname varchar2(100) := 'x.txt';
begin
lob_loc := bfilename('CELFILES_9906', fname);
v_length := dbms_lob.getlength(lob_loc);
owa_util.mime_header('text/plain', false);
htp.p('Content-length: ' || v_length);
htp.p('Content-Disposition: attachment; filename="' || fname || '"');
-- close the headers
owa_util.http_header_close;
-- download the BLOB
wpg_docload.download_file( Lob_loc );
end;
It returns:
"HTTP/1.1 500 Internal Server Error Server: Oracle XML DB/Oracle Database Content-Type: text/html; charset=UTF-8 X-DB-Content-length: 213 Transfer-Encoding: chunked Transfer-Encoding: chunked"
The filesize is correct and if I comment out the call to wpg_docload.download_file I see:
"Content-type: text/plain; charset=UTF-8 Content-length: 213 Content-Disposition: attachment; filename="x.txt""
Thanks.
Susan

Answer 1

Hi,
Tried simply doing the grant, but it did not work. Aside from having a bit of trouble with the loadblobfromfile (had to enumerate all 5 parameters) and also having to specifically do a dbms_lob.open, it worked!
Here's the final code that worked:
declare
lob_loc bfile;
v_length integer;
fname varchar2(100) := 'x.txt';
l_blob blob;
des_offset number := 1;
src_offset number := 1;
begin
lob_loc := bfilename('CELFILES_9906', fname);
v_length := dbms_lob.getlength(lob_loc);
DBMS_LOB.createtemporary(l_blob, FALSE);
dbms_lob.open(lob_loc, dbms_lob.lob_readonly);
DBMS_LOB.LOADBLOBFROMFILE(
dest_lob=>l_blob,
src_bfile=>lob_loc,
amount=>v_length,
dest_offset=>des_offset,
src_offset=>src_offset);
owa_util.mime_header('text/plain', false);
htp.p('Content-length: ' || v_length);
htp.p('Content-Disposition: attachment; filename="' || fname || '"');
-- close the headers
owa_util.http_header_close;
-- download the BLOB
wpg_docload.download_file( l_blob );
DBMS_LOB.freetemporary(l_blob);
EXCEPTION WHEN OTHERS THEN
DBMS_LOB.freetemporary(l_blob);
RAISE;
end;
Thanks Udo.
Susan