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Add mention that preload_libraries check the magic block, so 

non-PostgreSQL libraries cannot be loaded using this capability.
This commit is contained in:
Bruce Momjian 2006-06-15 17:49:09 +00:00
parent 6241f46495
commit 167c7bb49a
1 changed files with 6 additions and 3 deletions
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9
doc/src/sgml/config.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.61 2006/06/05 03:03:42 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.62 2006/06/15 17:49:09 momjian Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@ -961,7 +961,7 @@ SET ENABLE_SEQSCAN TO OFF;
<para>
<productname>PostgreSQL</productname> procedural language
libraries may be preloaded in this way, typically by using the
libraries can 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</>.
@ -973,7 +973,10 @@ SET ENABLE_SEQSCAN TO OFF;
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>