maybe you can use the issue template which i’m getting presented when creating a new thread in this “Server” category?
I think others are probably better able to help you if you provide more information about your environment (e.g. operating system, database, database version, specific database configuration). Those are all questions asked in that template which i think are asked for a good reason.
maybe this is the problem then? From what i have read in the past a hosting package might be not suitable to run ownCloud on because such packages are often having strange configurations or limitations / restrictions causing such problems.
Especially the “FOREIGN KEY” in your posted screenshot lead me (via a bugtracker search) to the following issue reported to the ownCloud people where problems at a shared hosting plays a central role in the discussion: