title: Hibernate, spring, JPS & isolation - custom isolation not supported
body: <p>I have been trying this:</p>
  
  <pre><code>@Transactional(isolation=Isolation.SERIALIZABLE, 
                 rollbackFor={Exception.class}, 
                 propagation=Propagation.REQUIRES_NEW)
  </code></pre>
  
  <p>on my service methods, but spring complains saying:</p>
  
  <pre><code>Standard JPA does not support custom isolation levels - use a special JpaDialect
  </code></pre>
  
  <p>How can I resolve this?</p>