Afer you get some real experience, it should be easier. I know some development company where data is not so important provide this opportunity.
Here are some common interview question other than OCP questions.
1. How big is your database? or how many tables do you have? ( for development environment)
2. How many concurrent users do you usually have?
3. What's your backup strategy?
4. What tools do you use to make your ERD (schema in some company)?
I can't remember too much so far. I'll publish later as anything pop up.