From: Kevin Grittner <kgrittn@postgresql.org>
Date: Sun, 16 Sep 2012 16:59:50 +0000 (-0500)
Subject: Fix documentation reference to maximum allowed for autovacuum_freeze_max_age.
X-Git-Tag: REL9_3_BETA1~904
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=327542645e698a4c85dde8229c21361f96688808;p=postgresql

Fix documentation reference to maximum allowed for autovacuum_freeze_max_age.

The documentation mentioned setting autovacuum_freeze_max_age to
"its maximum allowed value of a little less than two billion".
This led to a post asking about the exact maximum allowed value,
which is precisely two billion, not "a little less".

Based on question by Radovan Jablonovsky.  Backpatch to 8.3.
---

diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml
index ab01da166a..d2bd68f501 100644
--- a/doc/src/sgml/maintenance.sgml
+++ b/doc/src/sgml/maintenance.sgml
@@ -492,8 +492,8 @@
     will take more space, because it must store the commit status of all
     transactions back to the <varname>autovacuum_freeze_max_age</> horizon.
     The commit status uses two bits per transaction, so if
-    <varname>autovacuum_freeze_max_age</> is set to its maximum allowed value of
-    a little less than two billion, <filename>pg_clog</> can be expected to
+    <varname>autovacuum_freeze_max_age</> is set to its maximum allowed
+    value of two billion, <filename>pg_clog</> can be expected to
     grow to about half a gigabyte.  If this is trivial compared to your
     total database size, setting <varname>autovacuum_freeze_max_age</> to
     its maximum allowed value is recommended.  Otherwise, set it depending