Em segunda-feira, 22 de dezembro de 2014, Jim Nasby < jim.na...@bluetreble.com> escreveu:
> On 12/21/14, 3:30 PM, Fabrízio de Royes Mello wrote: > >> >> On Sun, Dec 21, 2014 at 5:18 PM, Tom Lane <t...@sss.pgh.pa.us <mailto: >> t...@sss.pgh.pa.us>> wrote: >> > >> > =?UTF-8?Q?Fabr=C3=ADzio_de_Royes_Mello?= <fabriziome...@gmail.com >> <mailto:fabriziome...@gmail.com>> writes: >> > > I work with some customer that have databases with a lot of schemas >> and >> > > sometimes we need to run manual VACUUM in one schema, and would be >> nice to >> > > have a new option to run vacuum in relations from a specific schema. >> > >> > I'm pretty skeptical of this alleged use-case. Manual vacuuming ought >> > to be mostly a thing of the past, and even if it's not, hitting >> > *everything* in a schema should seldom be an appropriate thing to do. >> > >> >> I agree manual vacuum is a thing of the past, but autovacuum doesn't >> solve 100% of the cases, and sometimes we need to use it so my proposal is >> just do help DBAs and/or Sysadmins to write simple maintenance scripts. >> > > Just one example of that is pre-emptively vacuuming during slower periods. > Nothing spells "fun" like a freeze vacuum in the middle of a busy lunch > period for a website. > > Similarly, it's common to need to proactively vacuum after a data load, > and since it's not unusual for there to be a schema dedicated to loading > data, this makes that easier. Good example. Thanks. > > > And why that, but not >> > say schema-wide ANALYZE, CLUSTER, TRUNCATE, ... >> > >> >> +1. I can write patches for each of this maintenance statement too. >> > > If we're going to go that route, then perhaps it would make more sense to > create a command that allows you to apply a second command to every object > in a schema. We would have to be careful about PreventTransactionChain > commands. Sorry but I don't understand what you meant. Can you explain more about your idea? Regards, Fabrízio Mello -- Fabrízio de Royes Mello Consultoria/Coaching PostgreSQL >> Timbira: http://www.timbira.com.br >> Blog: http://fabriziomello.github.io >> Linkedin: http://br.linkedin.com/in/fabriziomello >> Twitter: http://twitter.com/fabriziomello >> Github: http://github.com/fabriziomello
