Re: Survey on backing up unlogged tables: help us with PostgreSQL development! - Mailing list pgsql-general

From Marc Mamin
Subject Re: Survey on backing up unlogged tables: help us with PostgreSQL development!
Date
Msg-id C4DAC901169B624F933534A26ED7DF31034BB90B@JENMAIL01.ad.intershop.net
Whole thread Raw
In response to Re: Survey on backing up unlogged tables: help us with PostgreSQL development!  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
yep,

but I'll miss this as I only use WAL for crash recovery...

regards,

Marc Mamin

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Mittwoch, 17. November 2010 23:40
To: Marc Mamin
Cc: PostgreSQL general; Josh Berkus
Subject: Re: [GENERAL] Survey on backing up unlogged tables: help us
with PostgreSQL development!

"Marc Mamin" <M.Mamin@intershop.de> writes:
> Will it be possible to switch from unlogged to logged ?

Probably not, because it would completely confuse hot standby slaves
(or anything else looking at the WAL replay stream).  You can't just
start issuing WAL records against an already-built table or index,
because the WAL entries are deltas.

            regards, tom lane

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