declare
    v_clob Clob;
    v_blob Blob;
    v_in Pls_Integer := 1;
    v_out Pls_Integer := 1;
    v_lang Pls_Integer := 0;
    v_warning Pls_Integer := 0;
begin
    DBMS_LOB.createtemporary(v_blob, false, DBMS_LOB.session);

    v_clob := MY_REPORT_CLOB_IN_RTF_FORMAT;

    if v_clob is not null then 
       DBMS_LOB.convertToBlob(v_blob, v_clob, DBMS_LOB.getlength(v_clob), v_in, v_out, 
             DBMS_LOB.default_csid, v_lang, v_warning);

       owa_util.mime_header('application/msword',false);
       htp.p('Content-disposition: attachment; filename=report.rtf');
       owa_util.http_header_close;
    
       wpg_docload.download_file(v_blob);
    end if;
end;