<primary>SIGHUP</primary>
</indexterm>
The configuration file is reread whenever the main server process
- receives a
- <systemitem>SIGHUP</> signal (which is most easily sent by means
- of <literal>pg_ctl reload</>). 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
+ server process
also propagates this signal to all currently running server
processes so that existing sessions also get the new
value. Alternatively, you can send the signal to a single server