That tends to point at a Service running on a Windows machine that is running under the "NETWORK SERVICE" account. It is generally preferable to have apps that run like this (.NET ??) to set the client_identifier field when using a connection, otherwise it is darn near impossible to figure out 'who' it is. Bradd Piontek "Next to doing a good job yourself, the greatest joy is in having someone else do a first-class job under your direction." -- William Feather On Tue, Oct 14, 2008 at 1:49 AM, Rivaldi Bahar <rbahar99@xxxxxxxxx> wrote: > If a user access a database thru application reside in application server, > osuser in v$session is NETWORK?SERVICE. Is there a way to find who is the > true / actual user for NETWORK?SERVICE osuser (or user client machine name) > ? > > Regards > > > >