title: Detecting if an Oracle Database is Installed
body: <p>I was wondering if there was a way to tell if an instance of Oracle on a system has a database installed or not?</p>
  
  <p>This is for an installation script, and I need to verify that there is an actual database in place before proceeding with the loading of my own tablespace onto that database. Has anyone tackled this problem before?</p>
  
  <p>Cheers</p>