sgm <sgm277@yahoo.com.cn> wrote:
> I have a question about PITR backup in a single server, the method
> is make a base backup, and backup the WAL archive log(eg, every
> day at 11:30 pm). But if the OS' harddisk is broken(eg,14:00
> pm),the system can't start, we have to recover the database on a
> another server using the base backup and the WAL backup,so in this
> case suppose that we only can restore the database to yesterday's
> 11:30 pm state, am I right?
You can't recover to a point past your last available WAL record.
> I want to backup the pg_xlog folder every minute by crontab but my
> concern is that the data inconsistent, because the lastest log in
> pg_xlog is being updated all the time, am I right? Any
> suggestions?
Use streaming replication? Or at the very least, set a short
archive_timeout value and copy from the archive target location
frequently.
-Kevin