title: "ORA-01109 database did not open" error while configuring Oracle
body: <p>I am currently having issues configuring Oracle DB 11g on Ubuntu 14.04. I have successfully installed Oracle but the problem comes when I start configuring it.</p>
  
  <p>First it was a invalid listener issue, after some extensive searching I found out that I had to put my domain name on 127.0.0.1 which I did (my domain name also contains dashes). After I made those changes, I ran into another error:</p>
  
  <pre><code>ORA-01109 database not open
  </code></pre>
  
  <p>I have had no luck with this one. What causes the "database not open" error and how could I fix it?</p>