Move sqlite db to new installation of NC

Hi, I’m running nextcloud for privat use a long time (started with owncloud…) without having bigger issues.
Now I’m here :slight_smile: In this community I’m quite new and need your help as I have a problem out of a mistake I made while updating nc 16…17…18…

The problem is, that nc crashed while updating. I guess it crashes because of missing space. My fault.
Now NC is not running anymore.

I wanted to bring the db dump into a new installation and found out, that the dump is not correct.
It is a realy small one. I can’t get it recovered.

How can I move my ‘old’ db into a new installation of nc?
maybe there is option to migrate it to MariaDB in this time would be a benefit also.

Many thanks in advance!