Re: Try to understand VACUUM and its settings

On 10/5/15 5:00 PM, Michael Chau wrote:
> So, do I need to run vacuum freeze on those tables? Also, if
> autovacuum_freeze_max_age is commented, does it still mean that the
> default is 200M?

Yes, and unless you're running a very high transaction rate you probably
don't need to mess with it. Likewise you normally don't need to
explicitly freeze, though it's not a bad idea to do so after a large
data load. Just make sure that there's no open transactions that were
started before the data load transaction when you run the VACUUM.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com