ss="filename">postgres_fdw</code>
     establishes to foreign servers are kept open in the local session
     for re-use.
    </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">keep_connections</code> (<code class="type">boolean</code>)</span></dt><dd><p>
        This option controls whether <code class="filename">postgres_fdw</code> keeps
        the connections to the foreign server open so that subsequent
        queries can re-use them. It can only be spe