title: String data to blob column in update query for oracle
body: <p>I want to execute update query to update blob column. Query is something like this :</p>
  
  <pre><code>update table_name set blob_col = 'large text here';
  </code></pre>
  
  <p>But when I execute this, I get error saying : </p>
  
  <pre><code>SQL Error: ORA-01704: string literal too long.
  </code></pre>
  
  <p>I saw somewhere when I googled about this to use </p>
  
  <pre><code>update table_name set blob_col = utl_raw.cast_to_raw('large text here');
  </code></pre>
  
  <p>But for this also, I'm getting same error <code>SQL Error: ORA-01704: string literal too long</code>.</p>