The configuration file is reread whenever the main server process

receives a <systemitem>SIGHUP</> signal; this is most easily done by

running <literal>pg_ctl reload</> from the command-line or by calling

the SQL function <function>pg_reload_conf()</function>). The main

the SQL function <function>pg_reload_conf()</function>. The main

server process

also propagates this signal to all currently running server

processes so that existing sessions also get the new