title: how many chars can a str contain?
body: <p>Good morning,
  I have a problem in plsql because I have to know how many char a str can contain(I use  oracle 11).
  The code in plsql is this:</p>
  
  <pre><code>str VARCHAR2(32767):= NULL; 
  </code></pre>
  
  <p>str is a string of maximum size 32767 byte.</p>
  
  <p>But what is the max number of characters which this string can  contain?</p>
  
  <p>Thanks for the help.</p>