Re: Upgrading from 9.1 to 9.2 in place, same machine

We did an in-place upgrade(with the -k option) against a 6Tb DB from 8.4 to
9.2. It took all of 10 minutes to complete, which didn't count for running
the analyze afterward. However, if you are going to run the analyze DB
afterward, your mileage may vary.

On Wed, Jul 10, 2013 at 11:52 AM, Wells Oliver <wellsoliver(at)gmail(dot)com>wrote:

> Can anyone speak to the speed of pg_upgrade? Our database is 153GB. From
> 9.1 to 9.2, I'm nervous it might take hours. If it were less than hour,
> downtime would be more acceptable.
>
>
> On Wed, Jul 10, 2013 at 11:08 AM, Jonathan Nalley <jnalley(at)jnalley(dot)com>wrote:
>
>> On Wed, Jul 10, 2013 at 1:53 PM, Wells Oliver <wellsoliver(at)gmail(dot)com>
>> wrote:
>> > I have 9.1 running on 5432, and 9.2 running on 5433. The 9.1 database
>> size
>> > is 153g. 9.1 is actively used by systems, 9.2 is just sitting there
>> empty.
>> >
>> > I'd like to move the 9.1 database to 9.2 without any down time, and
>> ensuring
>> > that no data is lost.
>> >
>> > My original idea was to make 9.2 a slave of 9.1, then switch it over.
>> >
>> > Is there a better idea? Thanks for any tips.
>>
>> have you looked at simply using pg_upgrade ?
>>
>> http://www.postgresql.org/docs/9.2/static/pgupgrade.html
>>
>>
>> >
>> > --
>> > Wells Oliver
>> > wellsoliver(at)gmail(dot)com
>>
>>
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>
>
>
> --
> Wells Oliver
> wellsoliver(at)gmail(dot)com
>

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Vincent Lau | Database Administrator
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