UNC paths and java.io.file in Oracle

Question

Hi,
I'm just getting to grips with using some basic java in the database. I'm using 8.1.7 on W2K.
I'm trying to test for the existance of a file on a separate w2k domain:
import java.io.File;
public class JFileExists {
public static int fileexists (String fileName) {
File myFile = new File (fileName);
boolean retval = myFile.exists();
if (retval) return 1; else return 0;
public static void main (String args[]) {
System.out.println (
fileexists (args[0])
grant javasyspriv to mp;
function jfn_file_exists (file_in IN VARCHAR2) RETURN number
AS LANGUAGE JAVA NAME 'JFileExists.fileexists (java.lang.String) return int';
From the command prompt all is well:
E:\java>"c:\oracle\ora81\Apache\jdk\bin\java.exe" JFileExists i:\test.txt
1
E:\java>"c:\oracle\ora81\Apache\jdk\bin\java.exe" JFileExists \\mpweb1\image\test.txt
1
But when loaded into oracle its returning false with the UNC path. (but is ok with a mapped drive to the same path)
SQL> declare
2 begin
3 pa_main.pr_print(to_char(pa_main.jfn_file_exists('I:\test.txt')));
4 pa_main.pr_print(to_char(pa_main.jfn_file_exists('\\mpweb1\image\test.txt')));
5 end;
6 /
1
0
PL/SQL procedure successfully completed.
The oracleservicesid and listener are starting under a user called oracle_user which is a member
of the admins and domain admins group.
mpweb1 is on a separate domain to the database server mpdb1 but it also has a user called oracle_user with the same password.
oracle_user has full access to the share in question.
Am I missing something? I was trying to keep the database server and web server on different domains for better security
- but would things be easier if they were on the same domain?
Any help much appreciated for this java newbi!
Thanks,
Simon.
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Answer 1

I am also having problems with UNC paths. But I cannot access the location even if it is mapped as a drive. In JDK VJM I do not have a problem, but in Oracle it says the file cannot be found and say permission denied. I will try to change the user that starts the database and see if that helps.
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