Error in using Files

Question

Hi,
I am trying to write data into a new file and it gives me "invalid file operation" error.
Please advise.
Code
set serveroutput on
Declare
test_file UTL_FILE.FILE_TYPE;
S varchar2(200);
Begin
test_file := UTL_FILE.FOPEN('C:\','test.txt','W',999);
for i in 1..100
     Loop
          S := S || i;
end loop;
utl_file.putf(test_file,S);
utl_file.fclose(test_file);
End;
Error
SQL> @test.sql;
Input truncated to 1 characters
Declare
ERROR at line 1:
ORA-29283: invalid file operation
ORA-06512: at "SYS.UTL_FILE", line 475
ORA-29283: invalid file operation
ORA-06512: at line 5
P.S. The ORA file has an entry UTL_FILE_DIR = * (which makes any directory accessible)

Answer 1

P.S. The ORA file has an entry UTL_FILE_DIR = *
(which makes any directory accessible)Firstly, get rid of the UTL_FILE_DIR parameter value as it's a security loophole, especially when you set it to "*" as it leaves your whole server open to being hacked. The UTL_FILE_DIR parameter has been deprecated in favour of directory objects.
Now log in as SYS and create a directory object (I'm assuming your server is a windows server):
CREATE OR REPLACE DIRECTORY mydir AS 'C:\';And grant permissions on that directory object
GRANT read, write ON DIRECTORY mydir TO <username>;Then change your code so the FOPEN reads:
test_file := UTL_FILE.FOPEN('MYDIR','test.txt','W',999);Ensure that you specify the directory object name in uppercase and in quotes.