Truly bizarre stuff. I just did a "fresh" install of 0.9.3, but dropped your database and it seems to work fine (other than all the thumbs and images not being there). Some other things to try, if you feel like:
* Try using a different name for the database (muchan.sqlite, for example) and adjust the DB paramter in conf.php- maybe the "ochiba.sqlite" is poisoned somehow
* Restart the apache process if you are able (might be that it has a stale connection to it that needs to be released)
* Restart the server if possible (again, clear away stale locks)
* Roll back to ochiba 0.9.2
I'll play around with a conversion to an importable Mysql file when I get a chance.