   <p>
                 Use whatever lock policy was specified when the database environment
                 was created.  If no lock policy has yet been specified, set the lock
                 policy to DB_LOCK_RANDOM.
            </p>
              </li>
              <li>
                <p><a id="set_lk_detect_DB_LOCK_EXPIRE"></a>
                  <code class="literal">DB_LOCK_EXPIRE</code>
            </p>
                <p>
                 Reject lock requests which have timed out.  No other dead