On Fri, Feb 22, 2008 at 7:01 PM, Mikko Partio <
mpartio@gmail.com> wrote:
On Fri, Feb 22, 2008 at 5:44 PM, Alvaro Herrera <
alvherre@commandprompt.com> wrote:
Mikko Partio escribió:
> Now, the problem is that I cannot turn autovacuum off! I have tried to set
> autovacuum = off at postgresql.conf with no avail. I have also tried to
> disable the vacuum by inserting rows to pg_autovacuum but still the vacuum
> processes just pop up. What's even more weird is that autovacuum is
> vacuuming the same tables over and over. No sign of xid wraparound issues
> show in the logs. How can I stop autovacuum without restarting the database
> instance?
If your database is in danger of Xid wraparound, autovacuum will run on
it no matter what you do. Check pg_class.relfrozenxid and
pg_database.datfrozenxid, and the current Xid counter (from
pg_controldata I think). Also take a look at the description of the
autovacuum_min_freeze_age param (or was it max_freeze_age? I forget).
I think I may have found the problem, the import uses a temporary table which I guess autovacuum can not handle? Manually vacuuming it changed the relfrozenxids of other tables dramatically.
Regards
Mikko