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authorNeil Conway <neilc@samurai.com>2007-05-15 15:35:58 +0000
committerNeil Conway <neilc@samurai.com>2007-05-15 15:35:58 +0000
commit10d1f31253010a3ca339b01f4edbcf567ce3d53d (patch)
tree18498229be7f75fc11467f9ac12b64f8d426461f
parent38e6aea5a71705d325b315666316b359ef0dd7cb (diff)
Add a note to the documentation to clarify that even when
"autovacuum = off", the system may still periodically start autovacuum processes to prevent XID wraparound. Patch from David Fetter, with editorializing.
-rw-r--r--doc/src/sgml/config.sgml8
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index d40b609e39c..f6d446553ca 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.98.2.5 2007/04/20 02:37:48 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.98.2.6 2007/05/15 15:35:58 neilc Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@@ -3148,6 +3148,12 @@ SELECT * FROM parent WHERE key = 2400;
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
</para>
+ <para>
+ Note that even when this parameter is disabled, the system
+ will periodically launch autovacuum processes in order to
+ prevent transaction ID wraparound. See <xref
+ linkend="vacuum-for-wraparound"> for more information.
+ </para>
</listitem>
</varlistentry>