Download file to local machine using WPG_DOCLOAD.download

Hi ,
i am using database 11g and i am trying to write to file on database server using utl_file and download to the local machine by pl/sql procedure . i am directly executing this procedure in pl/sql . i am getting ORA-06502: PL/SQL: numeric or value error when executing owa_util.mime_header ('application/vnd.ms-excel',TRUE); statement in the procedure . not sure what is happening and i am new in using these features
here is my code
CREATE OR REPLACE PROCEDURE UTL_TEST_DOWNLOAD
AS
output_file utl_file.file_type;
vexists BOOLEAN;
vfile_length NUMBER;
vblocksize NUMBER;
l_blob BLOB;
l_bfile BFILE;
BEGIN
output_file:=UTL_FILE.FOPEN('DATA_DIR', 'timesheet.csv', 'w');
UTL_FILE.PUT_LINE(output_file,'COST_CENTRE'||
'HISTORY_DATE'||
'REF_NO'||
'FIELD_NAME'||
'VALUE'||
'DATA_TYPE'||
'CHANGE_DATE'||
'INT_REF');
UTL_FILE.fclose(output_file);
UTL_FILE.FGETATTR('DATA_DIR','timesheet.csv',vexists,vfile_length,vblocksize);
IF vexists THEN
DBMS_LOB.createtemporary (l_blob, TRUE, DBMS_LOB.SESSION);
l_bfile := BFILENAME ('DATA_DIR', 'timesheet.csv');
DBMS_LOB.fileopen (l_bfile,dbms_lob.file_readonly);
DBMS_LOB.loadfromfile (l_blob, l_bfile, DBMS_LOB.getlength (l_bfile));
DBMS_LOB.fileclose (l_bfile);
owa_util.mime_header ('application/vnd.ms-excel',TRUE);
dbms_output.put_line('after owa_util' );
owa_util.http_header_close;
WPG_DOCLOAD.download_file (l_blob);
end if;
EXCEPTION
WHEN utl_file.invalid_path THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_path');
WHEN utl_file.invalid_mode THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_mode');
WHEN utl_file.invalid_filehandle THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_filehandle');
WHEN utl_file.invalid_operation THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_operation');
WHEN utl_file.read_error THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.read_error');
WHEN utl_file.write_error THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.write_error');
WHEN utl_file.internal_error THEN
RAISE_APPLICATION_ERROR(-20001, 'utl_file.internal_error');
WHEN OTHERS THEN
dbms_output.put_line('SQLERRM '||SQLERRM);
END UTL_TEST_DOWNLOAD
SQLERRM ORA-06502: PL/SQL: numeric or value error
The file is getting created all the time i execute this procedure i am getting the above error while executing this statement owa_util.mime_header ('application/vnd.ms-excel',TRUE);

Hi,
it seems your issue is with PLSQL product so I would suggest to post your question in the PLSQL forum.
reference
PL/SQL
REgards, Roberto

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