Re: PITR

From: Murthy Nunna <mnunna(at)fnal(dot)gov>
To: desmodemone <desmodemone(at)gmail(dot)com>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: PITR
Date: 2014-02-22 17:03:23
Message-ID: BD7563973EF8894D905C80593EE9A4ED330E2F@MAIL01.fnal.gov
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Mat,

Thank you for your quick response....

The documentation says for pause_at_recovery_target:

This setting has no effect if hot_standby<http://www.postgresql.org/docs/9.2/static/runtime-config-replication.html#GUC-HOT-STANDBY> is not enabled, or if no recovery target is set.

In my case hot_standby is not enabled.

Thanks,
Murthy

From: desmodemone [mailto:desmodemone(at)gmail(dot)com]
Sent: Saturday, February 22, 2014 10:34 AM
To: Murthy Nunna
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] PITR

2014-02-22 17:06 GMT+01:00 Murthy Nunna <mnunna(at)fnal(dot)gov<mailto:mnunna(at)fnal(dot)gov>>:
All,

I am testing PITR.... I am looking for recovery.conf parameters where you can recovery the WALs available in the restore_command but do not complete recovery. I want to be able to connect to the database and check database in read only and if I am not there yet, I will feed more WALs in the archive directory and resume recovery. I would like to prevent multiple base restorations. I want to roll forward with WALs but check in between. Also, I do not want to set up replication standby.

Is it possible? If so, could you tell me what are the relevant recovery.conf params?

Thanks,
Murthy

Hi Murthy,
look at parameter "pause_at_recovery_target" and "recovery_target_time" with these parameters in the recovery.conf you could reach a point in the timeline to recover the database and then see if it's all ok and then finish the recovery with pg_xlog_replay_resume. If you want instead continue the recovery you have to stop the backend and change the parameter of recovery_target_time in the recovery.conf and restart the postmaster.
Mat DBA

In response to

  • Re: PITR at 2014-02-22 16:33:32 from desmodemone

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  • Re: PITR at 2014-02-22 17:31:51 from Julien Rouhaud

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