On Tue, 2007-15-05 at 09:07 -0400, Alvaro Herrera wrote:
> I agree, the note should be added there (but it should be a short one
> and refer the reader someplace else for more complete details).
I've applied the attached patch to HEAD and REL8_2_STABLE.
-Neil
Index: doc/src/sgml/config.sgml
===================================================================
RCS file: /home/neilc/postgres/cvs_root/pgsql/doc/src/sgml/config.sgml,v
retrieving revision 1.122
diff -c -p -r1.122 config.sgml
*** doc/src/sgml/config.sgml 20 Apr 2007 02:37:37 -0000 1.122
--- doc/src/sgml/config.sgml 15 May 2007 15:04:35 -0000
*************** SELECT * FROM parent WHERE key = 2400;
*** 3172,3177 ****
--- 3172,3183 ----
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>
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