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<chapter Id="runtime-config">

<title>Server Configuration</title>

<para>

<productname>PostgreSQL</productname> procedural language

librariesmay be preloaded in this way, typically by using the

librariescan be preloaded in this way, typically by using the

syntax <literal>'$libdir/plXXX:plXXX_init'</literal> where

<literal>XXX</literal> is <literal>pgsql</>, <literal>perl</>,

<literal>tcl</>, or <literal>python</>.

library is first used. However, the time to start each new

server process may increase slightly, even if that process never

uses the library. So this parameter is recommended only for

libraries that will be used in most sessions.

libraries that will be used in most sessions. The <quote>magic

block</> present in all PostgreSQL-supported libraries is checked

to guarantee compatibility. For this reason, non-PostgreSQL

libraries cannot be loaded in this way.

</para>

</listitem>

</varlistentry>