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'Hot' backup of PostgreSQL dbases

From: Mark <admin(at)asarian-host(dot)net>
To: <pgsql-novice(at)postgresql(dot)org>
Subject: 'Hot' backup of PostgreSQL dbases
Date: 2009-05-14 11:13:17
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-novice
Using PostgreSQL 8.3.7, I'd like to make a 'hot' backup of my dbases.


I've been using "pg_dumpall -c -o" for a while, but I realize that this is

no good. After all, for a restore, the PostgreSQL server needs to be up!

And what happens if the dbases crash/become corrupted (say, after a

power-outage), and PostgreSQL won't start up any more? In MySQL, this was

easy. In a Perl script I did something like: "FLUSH TABLES WITH READ

LOCK", and then I proceeded to tar the entire dbases directory (so I could

untar, without the MySQL server needing to be up).


Can something similiar be done in PostgreSQL, *without* bringing down the

server in its entirety?




- Mark


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