title: No usename HR in Oracle 12c
body: <p>I have installed oracle 12c in my ubuntu. I use oracle through sqldeveloper and I can successfully connect to user <code>sys</code> with my password. I want to be able to use all databases provided by oracle by default. When I try to connect with username <code>hr</code> with the same password as in <code>sys</code> I get error username not found.</p>
  
  <p><code>select * from all_users</code> doesn't list user <code>hr</code>. So I assume the user is not created at all.</p>
  
  <ul>
  <li>Should it not have been available by default, hr user?
  <li>How can I configure such that I get the access to all `hr` databases?
  </ul>