a class="xref" href="envdbbackup.html" title="DB_ENV-&gt;dbbackup()">DB_ENV-&gt;dbbackup()</a>
         methods to override their default behavior. These callbacks are
         configured using the 
         <a class="xref" href="envset_backup_callbacks.html" title="DB_ENV-&gt;set_backup_callbacks()">DB_ENV-&gt;set_backup_callbacks()</a>
         method.
     </p>
      <p>
         The <code class="methodname">DB_ENV-&gt;get_backup_callbacks()</code> method may
         be called at any time during the lif