Re: Upgrading

On 7/30/23 19:22, Amn Ojee Uw wrote:
> Thank you Ron and Peter for taking the time to respond to my call for help.
> 
> In summery, I'd like to use PostgreSQL-15.
> 
> However, since my Debian 12 already has already PostgreSQL-15 installed, 
> did I inadvertently overwrote PostgreSQL-15 when I installed 
> PostgreSQL-12? If so, how do I remove PostgreSQL-12 and continue on with 
> PostgreSQL-15.

Short answer

1) No you just created a new cluster. See result of:

pg_lsclusters

2) This assumes you don't have any valuable data in cluster. To remove 
first confirm cluster name below(main) with above command then:

pg_dropcluster 12 main


Longer answer read:

https://wiki.debian.org/PostgreSql

and for more in depth explanation two blogs I recently posted:

https://aklaver.org/wordpress/2023/06/29/postgres-debian-ubuntu-packagingpart-1/

https://aklaver.org/wordpress/2023/07/01/postgres-debian-ubuntu-packagingpart-2/

> 
> Please note that I installed using the following command
> 
> /*sudo apt-get -y install postgresql-12*/
> 
> Thanks in advance.
> 
> 
> On 7/30/23 11:34 a.m., Peter J. Holzer wrote:
>> On 2023-07-30 07:53:54 -0400, Amn Ojee Uw wrote:
>>> On my Debian 12, I installed PostgreSQL-12,
>> Where did you install that from?
>>
>> AFAICS, Debian 12 comes with PostgreSQL 15.
>>
>>> I'd like to upgrade to the latest release of PostgreSQL. So, my
>>> question is, what is the best way to upgrade to the next release of
>>> PostgreSQL?
>> If you stay with the same source, Just installing the new version and
>> then invoking pg_upgrade (or a variant - PGDG, Debian, Ubuntu have
>> pg_upgradecluster) should do the trick.
>>
>> If you switch sources, the setup may be sufficiently different that
>> pg_dump/pg_restore may be the easiest way.
>>
>>          hp
>>

-- 
Adrian Klaver
adrian.klaver@aklaver.com