are not disconnected and warning messages are reported.
      This function returns <code class="literal">true</code> if it disconnects
      at least one connection, otherwise <code class="literal">false</code>.
      Example usage of the function:
</p><pre class="screen">
postgres=# SELECT postgres_fdw_disconnect_all();
 postgres_fdw_disconnect_all
-----------------------------
 t
</pre><p>
     </p></dd></dl></div></div><div class="sect2" id="POSTGRES-FDW-CONNECTION-MANAGEMENT"><div class="titlepage"><di