If you work through the Oracle database security manuals you will learn how to secure a database, the database users, the data entry and exit points, how to secure the network and the operating systems. Finally after securing the systems you will need to learn how to identify when and why your security is drifting, how to stop the drift and how to automate the identification and assessment of security drift. Then you have to work out how to repeat these tasks against your entire database estate which for large customers can equate to thousands of databases across every contenent.

Wait there is more, how do you find when your database has been security breached, how do you know if your database is being used as a launch pad to the target system. Are you monitoring your systems to identify data theft or fraud? There's a lot to think about, we can help.