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Thread: archive_log command...

archive_log command...

From
Mario Splivalo
Date:
Can I force archiving of the WAL files using CHECKPOINT statement? My
checkpoing_segments is set to 32, but still archive_command is beeing
called up only every 45 minutes or so. Is there a way to speed this up a
bit? (I'd love to have it around 10 minutes, so I can have almost-live
backed-up server).

    Mario
--
Mario Splivalo
Mob-Art
mario.splivalo@mobart.hr

"I can do it quick, I can do it cheap, I can do it well. Pick any two."

Re: archive_log command...

From
Bruce Momjian
Date:
Mario Splivalo wrote:
> Can I force archiving of the WAL files using CHECKPOINT statement? My
> checkpoing_segments is set to 32, but still archive_command is beeing
> called up only every 45 minutes or so. Is there a way to speed this up a
> bit? (I'd love to have it around 10 minutes, so I can have almost-live
> backed-up server).

No, but it is on the TODO list.

--
  Bruce Momjian   bruce@momjian.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

Re: archive_log command...

From
Mario Splivalo
Date:
On Wed, 2006-06-21 at 21:30 -0400, Bruce Momjian wrote:
> Mario Splivalo wrote:
> > Can I force archiving of the WAL files using CHECKPOINT statement? My
> > checkpoing_segments is set to 32, but still archive_command is beeing
> > called up only every 45 minutes or so. Is there a way to speed this up a
> > bit? (I'd love to have it around 10 minutes, so I can have almost-live
> > backed-up server).
>
> No, but it is on the TODO list.
>

So, the only thing I could to is to reduce checkpoint_segments?

    Mario

Re: archive_log command...

From
Bruce Momjian
Date:
Mario Splivalo wrote:
> On Wed, 2006-06-21 at 21:30 -0400, Bruce Momjian wrote:
> > Mario Splivalo wrote:
> > > Can I force archiving of the WAL files using CHECKPOINT statement? My
> > > checkpoing_segments is set to 32, but still archive_command is beeing
> > > called up only every 45 minutes or so. Is there a way to speed this up a
> > > bit? (I'd love to have it around 10 minutes, so I can have almost-live
> > > backed-up server).
> >
> > No, but it is on the TODO list.
> >
>
> So, the only thing I could to is to reduce checkpoint_segments?

No, that doesn't help because a partially-filled WAL file with little
database activity could be stay unarchived for a long time.

--
  Bruce Momjian   bruce@momjian.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

Re: archive_log command...

From
Jim Nasby
Date:
On Jun 23, 2006, at 12:42 AM, Bruce Momjian wrote:
> Mario Splivalo wrote:
>> On Wed, 2006-06-21 at 21:30 -0400, Bruce Momjian wrote:
>>> Mario Splivalo wrote:
>>>> Can I force archiving of the WAL files using CHECKPOINT
>>>> statement? My
>>>> checkpoing_segments is set to 32, but still archive_command is
>>>> beeing
>>>> called up only every 45 minutes or so. Is there a way to speed
>>>> this up a
>>>> bit? (I'd love to have it around 10 minutes, so I can have
>>>> almost-live
>>>> backed-up server).
>>>
>>> No, but it is on the TODO list.
>>>
>>
>> So, the only thing I could to is to reduce checkpoint_segments?
>
> No, that doesn't help because a partially-filled WAL file with little
> database activity could be stay unarchived for a long time.

You can however copy the active WAL file at any time, and as many
times as you want. And there's recently been a function added that
will tell you what that exact file is (I think it's only in HEAD, but
I could be wrong).
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461