Обсуждение: Backups - WAL archiving. problem understanding documentation

David,

i'm not sure if this will help, but the following
should be located in your postgresql.conf file...

wal_files
wal_fsync_method
wal_debug



--- David <luckychap@bluebottle.com> wrote:

> My database v8.3 is running well on Fedora C3, but
> now I have to instal a
> backup system and
> I am having trouble understanding the documentation.
> I am new to Postgresql
> so please be
> patient with my questions.
>
> What is the difference between archive and backup?
> The terms seem to be
> inter changed.
>
> The "Archive" command "will always be placed in the
> postgresql.conf file (p
> 307). I could not see any sections or related
> commands there. Not even an
> example. Will adding an archive command in this file
> actually cause wal
> files to be copied? If so, when - when they fill or
> at a set interval or
> when a full backup is done. Is there a way of
> forcing the Wal file to be
> copied?
>
> The following command (p308) uses -i and </dev/null.
> The -i allows interact
> with the
> terminal, the </dev/null suggests it can get input
> from null. It seems
> contradictory to
> me.
>
> Cp -i %p mnt/server/archivedir/%f </dev/null
>
> How can I ensure WAL archiving is enabled and
> working? I thought it was
> automatic.
>
> If I execute pg_start_backup, an archive command,
> and pg_stop_backup in a
> script, will the
> commands be carried out in sequence and do not
> overlap (p309).
>
> Are backed up WAL files automatically deleted?  Can
> a delete command be
> added to the script?
>
> If there is any more documentation or books for
> beginners that are explicit
> on WAL backups I
> will gratefully buy one.
>
>
>
>




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