title: Is SAP JCO thread safe?
body: <p>I did not really manage to find proper documentation about this. There are the classes in JCO <em>com.sap.conn.jco.JCoDestination</em> and <em>com.sap.conn.jco.JCoDestinationManager</em>. My questions about them:</p>
  
  <ul>
  <li>are they thread safe?</li>
  <li>if not, are they expensive to create?</li>
  </ul>