Call muliple times wpg_docload.download_file is not working

Question

Trying to loop thru blobs of data that I want to download, can download 1 file but trying to call this piece of code multiple times doesn't work on the second call
declare
Lob_loc BLOB;
Lob_loc1 BLOB
begin
select blob_data
into Lob_loc
from nextgen_ods.ods_data_files
where file_name = :P1_FILE_NAME;
owa_util.mime_header( nvl('BINARY','application/octet'), FALSE );
htp.p('Content-Disposition: attachment; filename="'||replace(replace(substr(:P1_FILE_NAME,instr(:P1_FILE_NAME,'/')+1),chr(10),null),chr(13),null)|| '"');
owa_util.http_header_close;
wpg_docload.download_file(Lob_loc);
select blob_data
into Lob_loc1
from nextgen_ods.ods_data_files
where file_name = :P1_FILE_NAME;
owa_util.mime_header( nvl('BINARY','application/octet'), FALSE );
htp.p('Content-Disposition: attachment; filename="'||replace(replace(substr('myFile',instr('myFile','/')+1),chr(10),null),chr(13),null)|| '"');
owa_util.http_header_close;
wpg_docload.download_file(Lob_loc1);
end;

Answer 1

Yes, this will not work.
Not fault of wpg_docload.download_file() though - you are not creating a valid Mime stream response with your code. You cannot pass 2 files back like that to the web browser as a single HTTP response. Not valid.
What is a valid response? It is one with a correct header and body.
What response does your code attempt to create? A <i>header + body + header + body</i>. This violates HTTP specs and will not work.