title: What is PGDATA in PostgreSQL
body: <p>New to PostgreSQL, experienced in Oracle.
  Trying to understand what PGDATA is.</p>
  
  <p>Reading about it, it seems to contain what is necessary to create the initial Database cluster.</p>
  
  <p>I did and install and I am converting some data from Oracle. The path the installation put PGDATA by default is in a file system that is fairly small.
  So I am looking to move it into a bigger file system.</p>
  
  <p>So my questions are:</p>
  
  <ol>
  <li>Is this akin to the Oracle Data Dictionary?</li>
  <li>Do I need to put all my application data in that path or is it best practice not to?</li>
  <li>I know I can just take the default and create a new database in the bigger file system, but should I?</li>
  </ol>
  
  <p>Thanks</p>