[Akonadi] [Bug 476617] postgresql16 fails to run after DB update from postgresql13 - errors from akonadictl start

[BingMyBong]

https://bugs.kde.org/show_bug.cgi?id=476617

--- Comment #2 from BingMyBong <bingmybong at btinternet.com> ---
(In reply to Christophe Marin from comment #1)
> (In reply to BingMyBong from comment #0)
> 

> There's a small misunderstanding here. Akonadi doesn't use the system
> postgres but runs its own instance.
> That's why the db lives in $HOME/.local/share/akonadi/db_data. Whatever
> lives in var/lib/pgsql is not your akonadi DB.

I know very little about postgresql  so i have no idea why it started
referencing that directory or file

> > QSqlDatabase: QPSQL driver not loaded
> 
> This looks more interesting. Is libQt5Sql5-postgresql installed on your
> system?
No, it wasn't.  I've now installed it and it works fine.  Would this file have
been required by previous versions of postgresql?  If yes, i wonder how it got
uninstalled.
Do you know if I can uninstall postgresql 11, 12, 13, 14 and 15 with zypper and
not remove libQt5Sql5-postgresql?

Thanks a lot for having a look at my problem and giving me the solution.

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