due to the fact of using a shared server unfortunately it doesn’t seem to be possible for me to use occ (I already checked various workarounds but they all seem to be quite complicated and fragile…) - I had another idea and am wondering whether anyone has already successfully gone through this (or even estimate if this could be a promising approach):
Wouldn’t it be possible to easily export the SQLite database into a MySQL compatible dump file (eg by using a service like Rebasedata) and importing it into a prepared MySQL database through phpMyAdmin?
I guess Nextcloud might use different entries in the different database types (??), but these could - insofar as known - be patched manually afterwards.
Finally, manually patch the database definition entries in the config.php file.