Thread: WAL logs - do they operate at a database or cluster level?

Hi again and thanks for your help on my previous post.

Now I ask:
From the docs it seems that if I wish to enable WAL archiving for a database I change the settings of  archive_mode  and archive_command

in the postgresql.conf  file.
Am I right to assume that this enables WAL logging at a cluster level i.e. EVERY database in that cluster goes into WAL archive mode?

Thanks
Austen

Austen Birchall  Senior Database Administrator
Met Office FitzRoy Road Exeter EX1 3PB United Kingdom
Tel: +44 (0)1392 884481 Fax: +44 (0)1392 885681
E-mail: austen.birchall@metoffice.gov.uk Website: http://www.metoffice.gov.uk

On Thu, May 12, 2011 at 9:32 AM, Birchall, Austen
<austen.birchall@metoffice.gov.uk> wrote:
> Hi again and thanks for your help on my previous post.
>
> Now I ask:
> From the docs it seems that if I wish to enable WAL archiving for a database
> I change the settings of  archive_mode  and archive_command
>
> in the postgresql.conf  file.
> Am I right to assume that this enables WAL logging at a cluster level i.e.
> EVERY database in that cluster goes into WAL archive mode?

Yes, that's correct.

WAL logging is already enabled, with all databases going into the one
transaction log. Setting those parameters enables archiving of the WAL
data files.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services