Re: Suggestions needed about how to dump/restore a database

On Tue, 19 Dec 2006, Arnau wrote:

>> On Tue, 19 Dec 2006, Arnau wrote:
>>
>>> I've got a DB in production that is bigger than 2GB that dumping it
>>> takes more than 12 hours. I have a new server to replace this old one
>>> where I have restore the DB's dump. The problem is I can't afford to
>>> have the server out of business for so long, so I need your advice about
>>> how you'd do this dump/restore. The big amount of data is placed in two
>>> tables (statistics data), so I was thinking in dump/restore all except
>>> this two tables and once the server is running again I'd dump/restore
>>> this data. The problem is I don't know how exactly do this.
>>
>> Arnau,
>>
>> 2GB and it takes 12 hours? What sort of server is this running on? Does
>> your postgresql.conf have all default values perhaps? I routinely dump DBs
>> that are 4-8GB in size and it takes about 10-15 minutes.
>>
>
>
> It's a dual Xeon with 4 GB of ram and with a RAID 5. Probably it has the
> default values. Any suggestion about what parameters I should change to speed
> it up?

Have a look at:

http://www.powerpostgresql.com/PerfList
and
http://www.powerpostgresql.com/Downloads/annotated_conf_80.html

--
Jeff Frost, Owner <jeff(at)frostconsultingllc(dot)com>
Frost Consulting, LLC http://www.frostconsultingllc.com/
Phone: 650-780-7908 FAX: 650-649-1954