Hi
try that.
‘dbname’ => ‘DB1234567’,
‘dbhost’ => ‘hirrwi.store.d0m.de’,
‘dbtableprefix’ => ‘oc_’,
‘dbuser’ => ‘U1234567’,
‘dbpassword’ => ‘xyz_password_something’,
without -> dbport
check your access premission: user@localhost or user@127.0.0.1 or user@hirrwi.store.d0m.de -> all string after @ should be your server.
very important: if you have done an update from eg. owncloud, you have to copie the config file and modify because the salt, secret and isntanceid should be de same