Re: Documentation on PITR still scarce

Is this a TODO?

---------------------------------------------------------------------------

Greg Stark wrote:
>
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
> > I suppose it might be useful to have some kind of "suspended animation"
> > behavior where you could bring up a backend and look at the database in
> > a strict read-only fashion, not really executing transactions at all,
> > just to see what you had. Then you could end the recovery and go to
> > normal operations, or allow the recovery to proceed further if you
> > decided this wasn't where you wanted to be yet. However that would
> > require a great deal of mechanism we haven't got (yet). In particular
> > there is no such thing as strict read-only examination of the database.
>
> That would be a great thing to have one day for other reasons aside from the
> ability to test out a recovered database. It makes warm standby databases much
> more useful.
>
> A warm standby is when you keep a second machine constantly up to date by
> applying the archived PITR logs as soon as they come off your server. You're
> ready to switch over at the drop of a hat and don't have to go through the
> whole recovery process, you just switch the database from recovery mode to
> active mode and make it your primary database. But in the until then the
> backup hardware languishes, completely useless.
>
> Oracle has had a feature for a long time that you can actually open the
> standby database in a strict read-only mode and run queries. This is great for
> a data warehouse situation where you want to run long batch jobs against
> recent data.
>
> --
> greg
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073