Today, I had some problems with owncloud. During upgrading it removed my symbolic link and created a new data-directory. This wasn't really a big problem, but after I linked to the right data-directory owncloud didn't list the old files in my directory. After a while I found this very nice little tool console.php. It's a part of owncloud and it is for doing admin-tasks on the command-line. So I just rescaned my data-directory...

Owncloud's SQLite-Database is just for small use cases. On larger environments it's better to use a mysql-database. Owncloud7 has a very nice little tool to convert the existing SQLite-database to mysql and change the owncloud-configuration.