title: Oracle user disconnected without committing/rolling back, not longer can change database
body: <p>A user logged into the Oracle database I'm working with logged out without committing or rolling back and now my database cannot be changed, it seems to be locked.</p>
  
  <p>I tried </p>
  
  <pre><code> rollback
  </code></pre>
  
  <p>but that didn't work. </p>
  
  <p>Any thoughts?
  Thanks.</p>