On Nov 13, 2006, at 1:05 PM, Glen Parker wrote:
Matthew T. O'Connor wrote:
Glen Parker wrote:
I would like a way to run the autovacuum daemon on demand
periodically. Every night at 2 AM, for example.
Anybody know if this is possible? If not, it's a feature
request :-)
Autovacuum can be enabled / disabled on the fly using the GUC
settings. Perhaps you can write a cron script that runs at 2AM
that enables autovac, and at 6AM (just a guess) disables it in the
same fashion. I think that should work.
Would be curious to hear your results.
I thought it sounded like a good idea, but then...
SET autovacuum = on;
ERROR: parameter "autovacuum" cannot be changed now
I've turned it on and off in the postgresql.conf several times
(followed by a postmaster HUP) and it worked as expected. I think
this is a global setting that cannot be toggled in a particular session.
-Casey
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