I just installed Oracle 11g r2 on a Red Hat 5.5 server. I got some help with a little confusion about opening SQL*Plus, but I can't login. the login info that I used when installing is not working. I've tried to login with out connecting to a database and then using the 'conn as sysdba', but is still asks for a user name and password. How can I gain access to my database and change the passwords.