This short blog is showing you how to unlock the scott account after installing Oracle 11g.
The question here is where do you get the SQL>
After you installed Oracle 11g you should find the SQL Plus in your Windows Start manual. If you are using Linux then you need to manual find the SQL Plus.
Click on SQL Plus then you will get a screen display like below.
SQL*Plus: Release 18.104.22.168.0 Production on Wed Jul 25 15:13:25 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Enter user-name: sys as sysdba
The password is the password that you key in during the Oracle installation.
Once login in then type.
SQL>alter user scott account unlock;
SQL>alter user scott identified by tiger;