Alvaro Herrera <alvherre@commandprompt.com> writes:
> Tony Caduto wrote:
>> I did not have autovacuum turned on and I usually do a vacuumdb -z -a -f
>> -q each night but this one slipped through the cracks :-(
> Strange -- autovacuum should have started an automatic database-wide
> vacuum on that database, even if disabled.
We only added that in 8.2, no? 8.1 autovacuum would have forced the
vacuum to occur, but only if it was enabled in postgresql.conf.
regards, tom lane