Not difficult. 6 people came for the in person interview. 2 managers. Director might come as well if he is in the office. Not hard at all but not easy as well. Oracle Related. Troubleshooting, backups, patching etc Describe various oracle states How to change sql plan What are optimizer hints and how to use them Why use RMAN catalog Connection pooling

There was a very intense Q&A session on extremely detailed questions about why Oracle does what it does executing SQL code. It appeared right away there are serious issues with the application code and the DBA's spend most of their time chasing down badly written SQL.