@@ -591,8 +591,9 @@ SET ENABLE_SEQSCAN TO OFF;
591591 an otherwise idle connection. A value of 0 uses the system default.
592592 This parameter is supported only on systems that support the
593593 <symbol>TCP_KEEPIDLE</> or <symbol>TCP_KEEPALIVE</> symbols, and on
594- Windows; on other systems, it must be zero. This parameter is ignored
595- for connections made via a Unix-domain socket.
594+ Windows; on other systems, it must be zero.
595+ In sessions connected via a Unix-domain socket, this parameter is
596+ ignored and always reads as zero.
596597 </para>
597598 <note>
598599 <para>
@@ -614,8 +615,9 @@ SET ENABLE_SEQSCAN TO OFF;
614615 otherwise idle connection. A value of 0 uses the system default.
615616 This parameter is supported only on systems that support the
616617 <symbol>TCP_KEEPINTVL</> symbol, and on Windows; on other systems, it
617- must be zero. This parameter is ignored for connections made via a
618- Unix-domain socket.
618+ must be zero.
619+ In sessions connected via a Unix-domain socket, this parameter is
620+ ignored and always reads as zero.
619621 </para>
620622 <note>
621623 <para>
@@ -636,8 +638,9 @@ SET ENABLE_SEQSCAN TO OFF;
636638 Specifies the number of keepalive packets to send on an otherwise idle
637639 connection. A value of 0 uses the system default. This parameter is
638640 supported only on systems that support the <symbol>TCP_KEEPCNT</>
639- symbol; on other systems, it must be zero. This parameter is ignored
640- for connections made via a Unix-domain socket.
641+ symbol; on other systems, it must be zero.
642+ In sessions connected via a Unix-domain socket, this parameter is
643+ ignored and always reads as zero.
641644 </para>
642645 <note>
643646 <para>