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Allow the postmaster to accept changes in PGC_BACKEND GUC variables

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from the config file, so that these changes will propagate to backends
started later.  Already-started backends continue to ignore changes
in these variables.
This commit is contained in:
Tom Lane
2001-09-30 20:16:21 +00:00
parent e43d51fddc
commit f00da6d841
3 changed files with 58 additions and 41 deletions
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14
doc/src/sgml/runtime.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.86 2001/09/30 18:57:45 tgl Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.87 2001/09/30 20:16:21 tgl Exp $
-->
<Chapter Id="runtime">
@ -845,10 +845,11 @@ env PGOPTIONS='-c geqo=off' psql
<term><varname>LOG_CONNECTIONS</varname> (<type>boolean</type>)</term>
<listitem>
<para>
Prints a line informing about each successful connection to
Prints a line informing about each successful connection in
the server log. This is off by default, although it is
probably very useful. This option can only be set at server
start.
start or in the <filename>postgresql.conf</filename>
configuration file.
</para>
</listitem>
</varlistentry>
@ -1223,7 +1224,7 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
<listitem>
<para>
Sets the maximum number of simultaneously open files in each server
process. The default is 1000. The limit actually used by the code
subprocess. The default is 1000. The limit actually used by the code
is the smaller of this setting and the result of
<literal>sysconf(_SC_OPEN_MAX)</literal>.
Therefore, on systems where sysconf returns a reasonable limit,
@ -1233,7 +1234,10 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
processes all try to open that many files. If you find yourself
seeing <quote>Too many open files</> failures, try reducing this
setting.
This option can only be set at server start.
This option can only be set at server start or in the
<filename>postgresql.conf</filename> configuration file;
if changed in the configuration file, it only affects
subsequently-started server subprocesses.
</para>
</listitem>
</varlistentry>