title: How to generate a version 4 (random) UUID on Oracle?
body: <p>This blog explains, that the output of <code>sys_guid()</code> is not random for every system:</p>
  
  <p><a href="http://feuerthoughts.blogspot.de/2006/02/watch-out-for-sequential-oracle-guids.html" rel="noreferrer">http://feuerthoughts.blogspot.de/2006/02/watch-out-for-sequential-oracle-guids.html</a></p>
  
  <p>Unfortunately I have to use such a system.</p>
  
  <p>How to ensure to get a random UUID? Is it possible with <code>sys_guid()</code>? If not how to reliably get a random UUID on Oracle?</p>