title: OSB schema validation performance
body: <p>Is there any performance issues when using Validate nodes in a proxy service inside Oracle Service Bus (OSB)?</p>
  
  <p>What are the best practices when using the Validate node?</p>
  
  <p>What's the time cost of using several Validate nodes, for example:</p>
  
  <ol>
  <li>Validate header</li>
  <li>Branch depending on incomping operation</li>
  <li>Validate body schema depending on operation</li>
  <li>Do a xquery transformation</li>
  <li>Validate schema after transformation</li>
  <li>Send request to business service</li>
  </ol>
  
  <p>Is it useful a Validate node in step 5 after a xquery? Doesn't a xquery transformation assure schema integrity?</p>
  
  <p>Thanks!</p>