Re: Vacuum-ing without disconnecting users

Hi Thalis, thank's for the info.
If PostgreSQL has to lock the table, then how can it operate on 24x7 ?

Correct me if I'm wrong :)
* pg_dump seems to able to backup the data, don't care if there's an active
user
* Interbase/IBPhoenix do this on the fly ( vacuum )
* Oracle and many other database doesn't even has to vacuum ( of course
because different database concept ).  And before somebody else out there
screaming, I would like to say, yeah I know Oracle is very expensive :)

Vacuuming on the fly probably a very good idea.  Either automatically, like
Interbase/IBPhoenix or manually, by issuing the command but not locking the
table.  Hopefully it goes into the TO DO list.

Thank's
Andy



----- Original Message -----
From: "Thalis A. Kalfigopoulos" <thalis@cs.pitt.edu>
To: "Andy Samuel" <andysamuel@geocities.com>
Cc: <pgsql-general@postgresql.org>
Sent: Thursday, June 14, 2001 1:40 AM
Subject: Re: [GENERAL] Vacuum-ing without disconnecting users


> I was under the impression that vacuum was multi-user safe. It does table
locking so you don't have to worry about concurrency corrupting your data.
It just might take longer (either to vacuum or for a user to get a response)
>
> cheers,
> t.
>
>
> On Wed, 13 Jun 2001, Andy Samuel wrote:
>
> > Hi
> >
> > Is there a way to do the vacuum, but without throwing away active users
?
> >
> > TIA
> > Andy
> >
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 3: if posting/reading through Usenet, please send an appropriate
> > subscribe-nomail command to majordomo@postgresql.org so that your
> > message can get through to the mailing list cleanly
> >