Thanks guys, I'll keep that in mind.
Sorry to keep on about this, but please bear with me for one more m(_ _)m
<-- this is me abasing myself before you
IIRC there has been a bug fix to the COPY command, regarding handling
backslashed Ns or something like that sometime between 7.1 and 7.4, if I
dump the 7.1 db with the 7.4 version of pg_dump then do I get the fixes to
COPY?
The documentation for psql is clear that it uses a frontend version of copy
so I'm gonna assume for now (until I test it am told eitherway) that psql
7.4 will use the later version of copy against a 7.1 db.
Because the old db is badly in need of maintenance and some tables take a
considerable time to unload, I was considering running a few concurrent
sessions of psql and using the COPY command so I can start loading smaller
tables on the new server while the bigger ones are still unloading. Most of
the old tables have to be transformed to a new format, and I wanna get home
by the last train if possible :) .
regards
iain
----- Original Message -----
From: "Tom Lane" <tgl@sss.pgh.pa.us>
To: "Iain" <iain@mst.co.jp>
Cc: "Bruce Momjian" <pgman@candle.pha.pa.us>; <pgsql-admin@postgresql.org>
Sent: Monday, November 01, 2004 12:36 PM
Subject: Re: [ADMIN] pg_restore TODO - delay PK creation
> "Iain" <iain@mst.co.jp> writes:
>> Out of interest, what is the word on using newer versions of pg_dump on
>> older verisons of the DB - is it is possible or even wise to unload a
>> 7.1
>> DB with the 7.4 version of pg?
>
> Standard, recommended procedure is to use the later version of pg_dump
> to unload data from the old server. This gets you the benefit of any
> bug fixes in the newer pg_dump (of which there are always some...)
>
> Note that pg_dump is usually not designed to produce output that will
> load into back-release servers, so this only applies to cross-version
> upgrades. You can't use the 7.4 pg_dump against a 7.1 server and expect
> to get a dump file that will load back into the 7.1 server --- more than
> likely, the dump file will make use of features that weren't in 7.1.
>
> regards, tom lane
>
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