If you’re looking to brush up on your PL/SQL knowledge, PL/SQL challenge is pretty nice. It’s a daily challenge quiz, where you are presented with multiple choice or true/false questions. It’s an initiative by Steven Feuerstein , who’s pretty well known. I just joined in, first few questions were not too tough 🙂 Join in, there’s some great prizes to be won .
If you know of any more such websites, do drop in a comment and let me know.
(PS: If you’re wondering what’s with the weird URL structure, well its built on Oracle Apex. Long, clumsy URLs are a pain, and Apex does nothing to banish them).