Re: point-in-time recovery

Rajesh Kumar Mallah wrote:
>
>
> Thanks for responding , but i still have
> more to discuss.
>
> On Friday 25 Apr 2003 7:47 pm, Bruce Momjian wrote:
> > Rajesh Kumar Mallah wrote:
> > > What is this PITR anyway ?
> > >
> > > when it comes will i be able to
> > >
> > > 1. reduce by pg_dump times ?
> > > 2. can afford to run pg_dump less frequently ?
> > > 3. Will be able to rollback committed transactions of past 5 mins?
> >
> > You can do a dump,
>
> Do u mean pg_dump here, or some special command
> thats doing a quick snapshot dump?

You do one pg_dump, the start PITR logging.

>
> then do continuous logging of all database changes
> is this logging happening automatically for i have to give some
> special command to start logging?

Not sure yet --- we arn't done, but it will probably be a special
command.

>
> > until the next backup. If you crash in the middle of the day, you can
> > recover up to the point of the crash.
>
> say i do not crash but do a
>
> psql> DELETE from TABLE_NAME ;
> DELETE 1021
> psql> Ooops what did i do , damn my last backup is 6 hrs old ??
>
> does PITR help me here?

Ideally, you will be able to restore to any point you wish, such as
before the DELETE. However, I do not know if that control will be
implemented in 7.4, but if not, certainly 7.5.

--
Bruce Momjian | http://candle.pha.pa.us
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