DBMS_DATAPUMP - can it pump to a network drive?

Question

I'm trying to execute a PL/SQL block that looks like this:
DECLARE
PUMP_HANDLE NUMBER := 0;
STATE_OF_JOB VARCHAR2(30) := 'UNKNOWN';
FULL_STATUS KU$_STATUS := NULL;
BEGIN
PUMP_HANDLE := DBMS_DATAPUMP.OPEN ('EXPORT','TABLE');
DBMS_DATAPUMP.ADD_FILE (HANDLE => PUMP_HANDLE, FILENAME => 'b13.dmp', DIRECTORY => 'DARREN_S_2ND_DIR', FILESIZE => '500MB', FILETYPE => DBMS_DATAPUMP.KU$_FILE_TYPE_DUMP_FILE);
END;
And the ADD_FILE line returns this stack trace:
ORA-39001: invalid argument value
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 79
ORA-06512: at "SYS.DBMS_DATAPUMP", line 2486
ORA-06512: at "SYS.DBMS_DATAPUMP", line 2718
ORA-06512: at line 6
DARREN_S_2ND_DIR was created like this, where H: is a network drive (that the database server has access to, obviously):
create or replace directory DARREN_S_2ND_DIR as 'H:\DMORBY\GRANULAR_BACKUP';
It seems to work okay when a different directory that is created as a local directory on the server. (It's Oracle 10g on Windows Server 2003.)
Is it possible that creating a directory on a network drive is the problem, or have I missed something else?

Answer 1

Go to task manager and see who is running the oracle.exe process. Or check the services applet and look at the "Log On As" for your db service. If it's you as well, then I dunno. If it's Local System, then you need to modify the service to Log On As a real account with privs to that drive. After you do that, shutdown the database and restart the service.
Edit:
And of course you may need to change ownership of all the database files, as well.