Thanks Joel. It works now as local user. It didn't work as a domain
user when logged on from domain cache.

+++++++++++++++++++++++++

First of all, what version are you on?
How did you create the password file? Are you absolutely sure you
spelled the filename correctly? *pwd* instead of *pw* will blow you
off.
Have you tried remote_login_passwordfile=none? The parameters changed
from 9i to 10g. Are you conversant with the differences between pfile
and spfile?
What are the _exact_ commands you are entering?
What happens when you try it in quotes from the shell, like
sqlplus "/ as sysdba"
How are you setting up your environment? Do you have an environment
chooser?

Raj wrote:
> Thanks. It works now. I used to login as a domain user without being
> connected to domain. I had logged in as cad\raj from the domain cache.
> It did not work then.
>
> Now i created a local user raj and added it to ORA_DBA group. Now it
> works for the local user. I am not sure if being actually connected to
> the domain would help.

Connected to the domain won't help either if you are on 2000/XP/2003.
M$ changed the way server handles authentication from WinNT to Win2000
and beyond.

If you are interested to learn then google on "Pre-Windows 2000
compatible access".

Regards
/Rauf