Symantec Data Insight DLP 4.5 (12.5) - installed with Oracle 11g?

Hi.

I'm Installing Symantec Data Instight DLP 4.5.

I have couple of questions regarding the DB the product uses:

1. Do I need to install DB or the product can work without one?

2. According to the docs that I got, I saw that it's recommended to install Oracle DB. Can I work with different DB?

3. For Windows Server 2008 R2, I need Oracle DB 11.2.0.3 and 11.2.0.4 (again according to the docs - Symantec™ Data LossPrevention Installation Guide
for Windows), from where can i get those versions? the versions i can download from Oracle website are 11.2.0.1.

Thanks,

Nati