i'm using an application which opens many oracle connections concurrently, and from time to time i get the above errors when trying to open a new connection (1005 null password given, 1017 invalid username / password).
however, the username and password i send are correct and are the same every time.
when i do not open many connections, i don't get these errors.

I'm using the .net framework 1.1 with microsoft data adapters which has a known bug of not closing connections properly. (for reasons beyond my control i cannot use another provider).
However, in the past, when i had too many connections open, i would get a 'request timed out' error, and not these.
any ideas where these weird errors come from and how i can avoid them?
thanks in advance,