Execute VACUUM FULL when DB touches a specific size ?

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Execute VACUUM FULL when DB touches a specific size ?
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* Execute VACUUM FULL when DB touches a specific size ?
@ 2010-04-05 02:21  Nilesh Govindarajan <lists@itech7.com>
  0 siblings, 1 reply; 5+ messages in thread

From: Nilesh Govindarajan @ 2010-04-05 02:21 UTC (permalink / raw)
  To: pgsql-admin

Hi,

I wish to execute VACUUM FULL when DB touches a specific size. How to do 
it ?

I'm aware about the caveats of VACUUM FULL.

-- 
Nilesh Govindarajan
Site & Server Administrator
www.itech7.com
मेरा भारत महान !
मम भारत: महत्तम भवतु !



^ permalink  raw  reply  [nested|flat] 5+ messages in thread

* Re: Execute VACUUM FULL when DB touches a specific size ?
@ 2010-04-05 03:24  Scott Marlowe <scott.marlowe@gmail.com>
  parent: Nilesh Govindarajan <lists@itech7.com>
  0 siblings, 1 reply; 5+ messages in thread

From: Scott Marlowe @ 2010-04-05 03:24 UTC (permalink / raw)
  To: Nilesh Govindarajan <lists@itech7.com>; +Cc: pgsql-admin

On Sun, Apr 4, 2010 at 8:21 PM, Nilesh Govindarajan <lists@itech7.com> wrote:
> Hi,
>
> I wish to execute VACUUM FULL when DB touches a specific size. How to do it
> ?
>
> I'm aware about the caveats of VACUUM FULL.
>

Write a bash script that cds to the data dir and runs du -s, grabs the
value, and if it's over a certain size then run vacuum full.

^ permalink  raw  reply  [nested|flat] 5+ messages in thread

* Re: Execute VACUUM FULL when DB touches a specific size ?
@ 2010-04-05 04:08  Nilesh Govindarajan <lists@itech7.com>
  parent: Scott Marlowe <scott.marlowe@gmail.com>
  0 siblings, 2 replies; 5+ messages in thread

From: Nilesh Govindarajan @ 2010-04-05 04:08 UTC (permalink / raw)
  To: Scott Marlowe <scott.marlowe@gmail.com>; +Cc: pgsql-admin

On 04/05/10 08:54, Scott Marlowe wrote:
> On Sun, Apr 4, 2010 at 8:21 PM, Nilesh Govindarajan<lists@itech7.com>  wrote:
>> Hi,
>>
>> I wish to execute VACUUM FULL when DB touches a specific size. How to do it
>> ?
>>
>> I'm aware about the caveats of VACUUM FULL.
>>
>
> Write a bash script that cds to the data dir and runs du -s, grabs the
> value, and if it's over a certain size then run vacuum full.

That's what I was thinking to do, but how do I distinguish between the 
databases ? The datadir/base seems have directories whose names are numbers.

-- 
Nilesh Govindarajan
Site & Server Administrator
www.itech7.com
मेरा भारत महान !
मम भारत: महत्तम भवतु !

^ permalink  raw  reply  [nested|flat] 5+ messages in thread

* Re: Execute VACUUM FULL when DB touches a specific size ?
@ 2010-04-05 06:06  Vibhor Kumar <vibhor.aim@gmail.com>
  parent: Nilesh Govindarajan <lists@itech7.com>
  1 sibling, 0 replies; 5+ messages in thread

From: Vibhor Kumar @ 2010-04-05 06:06 UTC (permalink / raw)
  To: Nilesh Govindarajan <lists@itech7.com>; +Cc: Scott Marlowe <scott.marlowe@gmail.com>; pgsql-admin

> That's what I was thinking to do, but how do I distinguish between the databases ? The datadir/base seems have directories whose names are numbers.

Use pg_database_size function to get the size of DB.

You can create a plpgsql function, which you can schedule using pgagent 

Or 

If you are writing Bash script capture the return value of pg_database_size function, in some variable and perform vacuum.

Thanks & Regards,
Vibhor Kumar (PCP & OCP)
ITIL V3 Cerftified.

On 05-Apr-2010, at 9:38 AM, Nilesh Govindarajan wrote:

> On 04/05/10 08:54, Scott Marlowe wrote:
>> On Sun, Apr 4, 2010 at 8:21 PM, Nilesh Govindarajan<lists@itech7.com>  wrote:
>>> Hi,
>>> 
>>> I wish to execute VACUUM FULL when DB touches a specific size. How to do it
>>> ?
>>> 
>>> I'm aware about the caveats of VACUUM FULL.
>>> 
>> 
>> Write a bash script that cds to the data dir and runs du -s, grabs the
>> value, and if it's over a certain size then run vacuum full.
> 
> 
> 
> -- 
> Nilesh Govindarajan
> Site & Server Administrator
> www.itech7.com
> मेरा भारत महान !
> मम भारत: महत्तम भवतु !
> 
> -- 
> Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-admin




^ permalink  raw  reply  [nested|flat] 5+ messages in thread

* Re: Execute VACUUM FULL when DB touches a specific size ?
@ 2010-04-05 06:29  Guillaume Lelarge <guillaume@lelarge.info>
  parent: Nilesh Govindarajan <lists@itech7.com>
  1 sibling, 0 replies; 5+ messages in thread

From: Guillaume Lelarge @ 2010-04-05 06:29 UTC (permalink / raw)
  To: Nilesh Govindarajan <lists@itech7.com>; +Cc: Scott Marlowe <scott.marlowe@gmail.com>; pgsql-admin

Le 05/04/2010 06:08, Nilesh Govindarajan a écrit :
> On 04/05/10 08:54, Scott Marlowe wrote:
>> On Sun, Apr 4, 2010 at 8:21 PM, Nilesh Govindarajan<lists@itech7.com> 
>> wrote:
>>> Hi,
>>>
>>> I wish to execute VACUUM FULL when DB touches a specific size. How to
>>> do it
>>> ?
>>>
>>> I'm aware about the caveats of VACUUM FULL.
>>>
>>
>> Write a bash script that cds to the data dir and runs du -s, grabs the
>> value, and if it's over a certain size then run vacuum full.
> 
> That's what I was thinking to do, but how do I distinguish between the
> databases ? The datadir/base seems have directories whose names are
> numbers.
> 

You can find the number with a simple query (SELECT oid FROM pg_database
WHERE datname='your database name') or with the oid2name contrib module.

But that's not the real issue. If you have objects of this database in
other tablespaces, "du -sh" on datadir/base/<oid> won't count them. You
should better use this query:

  SELECT pg_database_size('your database name')

to get the total size of your database.

-- 
Guillaume.
 http://www.postgresqlfr.org
 http://dalibo.com

^ permalink  raw  reply  [nested|flat] 5+ messages in thread

end of thread, other threads:[~2010-04-05 06:29 UTC | newest]

Thread overview: 5+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2010-04-05 02:21 Execute VACUUM FULL when DB touches a specific size ? Nilesh Govindarajan <lists@itech7.com>
2010-04-05 03:24 ` Scott Marlowe <scott.marlowe@gmail.com>
2010-04-05 04:08   ` Nilesh Govindarajan <lists@itech7.com>
2010-04-05 06:06     ` Vibhor Kumar <vibhor.aim@gmail.com>
2010-04-05 06:29     ` Guillaume Lelarge <guillaume@lelarge.info>

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