title: ORA-12704: Unable to convert character data
body: <p>I am trying to perform SET operations in Oracle across remote databases.
  I am using the MINUS operator.</p>
  
  <p>My query looks something like this.</p>
  
  <pre><code>SELECT NAME FROM localdb MINUS SELECT NAME from remotedb@dblink
  </code></pre>
  
  <p>This is throwing up a ORA-12704 error. I understand this warrants some kind of conversion or a NLS Setting. </p>
  
  <p>What should I try next?</p>