title: "ORA-00903: invalid table name" error while updating a record
body: <p>I have this table called <code>iowe</code>. It <em>has</em> been created and exists in my database. This is how it looks like:</p>
  
  <pre>
  NAME           AMOUNT Serial Number
  ---------- ---------- -------------
  Praveen         20500
  Roshan           5000             2
  Rohit            5000             3
  Shashi           7500             4
  </pre>
  
  <p>When I try to update the Serial Number corresponding to the name Praveen, by inputting the command</p>
  
  <pre><code>update table iowe
  set "Serial Number" = 1 where amount = 20500
  </code></pre>
  
  <p>or </p>
  
  <pre><code>update table iowe
  set "Serial Number" = 1 where name = 'Praveen'
  </code></pre>
  
  <p>I get the following error: <code>ORA-00903: invalid table name</code></p>
  
  <p>Other commands execute fine on this table.</p>