title: How to check in Oracle if table is read only?
body: <p>I would like to make an ORACLE table read only. It is possible using:</p>
  
  <p><code>ALTER TABLE table1 READ ONLY;</code></p>
  
  <p>However when table1 is already read only, then altering table is causing error.</p>
  
  <p>So the question is how to check if table1 is read only, and if it isn't then
  then to make it read only.</p>