Re: Postgres 12 -> 13 any need to re-index?

Do you mean Ubuntu distro? I did not. My database collation is also still en_US.UTF-8, but everything has ground to a halt after the upgrade.

On Tue, Feb 9, 2021 at 10:07 AM Ron <ronljohnsonjr@gmail.com> wrote:

On 2/9/21 12:00 PM, Wells Oliver wrote:
> Hey guys, I just upgraded a DB from 12 to 13. In testing this seemed to go
> well, but it seems like most of my queries are not using the indexes after
> the upgrade, so everything is quite so.
>
> Is there a general need to REINDEX after upgrading to 13, or might there
> be another issue? The configuration parameters are the same as they were
> persisted via pg_upgradecluster.

Did you also change or upgrade the distro, or modify the collation? (That's
an automatic need to rebuild indices.)