title: How do I list all context namespaces in Oracle DB?
body: <p>If I create a context namespace:-</p>
  
  <pre><code>CREATE OR REPLACE CONTEXT hr_security
      USING hr.pkg_security
      ACCESSED GLOBALLY;
  </code></pre>
  
  <p>How can I list all such namespaces and look up their properties. For example, <code>hr_security</code> can be access globally and can be set from <code>pkg_security</code> package.</p>