Trouble connecting to 10g via JDBC

Running 10g on linux fedora 3. Installed two weeks ago and everything seems fine.

The database and the listener seem to be up and running.

I started using JDBC and I'm having a problem connecting via JDBC. I don't have the problem when I use the "System" user. I do have the problem when I use other, non-system users that I created such as "LTChalupa" user.

System user works fine in all cases.
I can connect on server via SQL*Plus,
from a remote machine via "System" user using JDBC, and using SQL*Plus from the remote machine.

The users I created don't seem to connect via JDBC but otherwise seem to connect fine. For example user "LTChalupa" Using this user, I can connect on server via SQL*Plus, from a remote machine via SQL*Plus,
but NOT from the remote machine via JDBC.

When I use "LTChalupa" user to connect from the remote machine using JDBC, I get an "ora-01017 invalid username/password."

Can anyone give me an idea what might be causing the problem?

lee

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