In the current Oracle Critical Patch Update (April 2009) all our Security Bugs are solved, as well in Oracle Database version 11.1.0.7.
Starting from now, I can recommend Database Vault.
But please read the documentation carefully. Database Vault does not help for all security requirements (e.g. encryption).
Learn more about Database Vault – and which options you need for a secure environment – in our new TechnoCircle Compliance…