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>Hi ,
>
>I am experimenting with PITR aspect of postgres8.0,
>and I needed some answers on this subject.
>
>I have following questions :
>
>1)
>At time t0, I created a base backup. (got a backup
>marker file named as:
>0000000800000002000000A8.005E61B4.backup)
>(assume no previous base backups and recoveries...)
>
>On time t2 I did a recovery till time t1 ( t0<t1<t2).
>Now I see history file named 00000009.history. And
>then onwards, the WAL filenames start with 00000009.
>Is 00000009 here the new timeline ? If so is it safe
>to deduce that from .history file that gets generated
>after recovery ?
>
>2)
>Now say, I was happy with the above recovery and after
>a few days, at time t3 I decided to revover my db back
>in time t.
>
>What timeline should I specify in recovery.conf if:
>(or do I need to specify it in each case?)
>
> a) t1 < t < t2
> b) t2 < t < t3
>
>IMO, in case a) the timeline of base backup would be
>used, so I wouldn't need to specify timeline. While in
>case b) I need to specify this new
>timeline(recovery_target_timeline=00000009).
>Kindly confirm...
>
>trying to put the scenario pictorially:
>
> t0 t2
> | t1 |
> |-------| ------ |---------- timeline: 00000008
> |
> | timeline:00000009
> |----------------------|----
> t3
>
>
>
>TIA,
>Satya
>
>
>
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