Re: [GENERAL] How to free disk space

2008-10-22 Thread Scott Marlowe
On Wed, Oct 22, 2008 at 2:46 AM, Grzegorz Jaśkiewicz <[EMAIL PROTECTED]> wrote:
> what's the version you're running ? you shouldn't run into that problem too
> often with 8.3

I'm running 8.3.3 soon to be 8.3.4 or .5 if there's a bug fix due out.

There's only so much the autovacuum daemon can do when a rogue query
runs an update on a whole table several times in a row.  The rogue
query has been eliminated from our app, but the damage was already
done.


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Re: [GENERAL] How to free disk space

2008-10-22 Thread Grzegorz Jaśkiewicz
what's the version you're running ? you shouldn't run into that problem too
often with 8.3

just like guys said here, regular vacuum, and reindex once in a while.


Re: [GENERAL] How to free disk space

2008-10-21 Thread Scott Marlowe
On Tue, Oct 21, 2008 at 10:46 AM, Robert Treat
<[EMAIL PROTECTED]> wrote:
> On Tuesday 21 October 2008 09:00:30 postgres Emanuel CALVO FRANCO wrote:
>> After run VACUUM, you must run REINDEXDB to decrease indexes.
>>
>
> This is probably overkill, as you won't need to do this for a lot of tables in
> your database, and the locking issues are probably unhelpful.

Note, however, that if you have scheduled downtime and your db server
is fast enough, you can schedule a vacuum full / reindexdb during that
time.  We had a rogue query that made a few of our largest tables very
very bloated (like 95% bloat) and we had some downtime to fix it and
it was way easier to just do the whole db with vacuum full verbose,
then reindex.  I also had a chacne to set fill factors on some of the
tables that I'd wanted new fill factors on.

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Re: [GENERAL] How to free disk space

2008-10-21 Thread Robert Treat
On Tuesday 21 October 2008 09:00:30 postgres Emanuel CALVO FRANCO wrote:
> After run VACUUM, you must run REINDEXDB to decrease indexes.
>

This is probably overkill, as you won't need to do this for a lot of tables in 
your database, and the locking issues are probably unhelpful. 

> You can pg_resetxlog too, but you need restart server to do that.
>

No No No!!! You should never ever ever run pg_resetxlog on a production 
machine!! I'm not sure where you got this idea, but it is a bad one to be 
sure!

> 2008/10/21 Ruben Blanco <[EMAIL PROTECTED]>:
> > Hi:
> >
> > My database is growing fast taking too much disk space. How can I free
> > disk space without performing a VACCUM FULL? It locks the database for
> > several hours, and that is not a solution.
> >
> > I guess a backup-restore would do the work but, isn't there a better way
> > to do this without shutting down postgres?
> >
> > Thanks in advandce.
>
> --
>   Emanuel Calvo Franco
> Syscope Postgresql DBA
>   BaPUG Member

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Re: [GENERAL] How to free disk space

2008-10-21 Thread Raymond O'Donnell
On 21/10/2008 11:59, Ruben Blanco wrote:

> My database is growing fast taking too much disk space. How can I free
> disk space without performing a VACCUM FULL? It locks the database for
> several hours, and that is not a solution.

You shouldn't need to do VACUUM FULL - plain VACUUM should do the job.
Have a trawl through the archives, as this topic comes up regularly.

Ray.


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Re: [GENERAL] How to free disk space

2008-10-21 Thread Devrim GÜNDÜZ
On Tue, 2008-10-21 at 11:59 +0100, Ruben Blanco wrote:
> My database is growing fast taking too much disk space.

Are you running regular vacuum?
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Re: [GENERAL] How to free disk space

2008-10-21 Thread postgres Emanuel CALVO FRANCO
After run VACUUM, you must run REINDEXDB to decrease indexes.

You can pg_resetxlog too, but you need restart server to do that.

2008/10/21 Ruben Blanco <[EMAIL PROTECTED]>:
> Hi:
>
> My database is growing fast taking too much disk space. How can I free disk
> space without performing a VACCUM FULL? It locks the database for several
> hours, and that is not a solution.
>
> I guess a backup-restore would do the work but, isn't there a better way to
> do this without shutting down postgres?
>
> Thanks in advandce.
>
>



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  Emanuel Calvo Franco
Syscope Postgresql DBA
  BaPUG Member

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