Re: Determining current WAL

From: thomas(dot)revell(at)powerconv(dot)alstom(dot)com
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Determining current WAL
Date: 2005-02-17 15:36:16
Message-ID: OFDF368CAB.07D44D5F-ON80256FAB.00558C4C-80256FAB.00560DAB@transport.alstom.com
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OK, thanks.

thomas(dot)revell(at)powerconv(dot)alstom(dot)com writes:
> I'm currently looking at using WAL / PITR backups for a database, and I
> need to keep the backups as up to date as possible. As such, keeping a
> copy of the current WAL file, as suggested in the manual, would seem to
be
> a very good idea. I'm slightly confused, though, about which file is the

> current. I had assumed that it would always be the highest numbered,

No. Go with the most-recently-modified. Segment files are normally
created (or renamed into place) in advance of being needed.

There should probably be a cleaner/more reliable way of identifying
the active file ...

regards, tom lane

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