AWS RDS Oracle Database Vault feature equivalent

Based on my experience, I've seen that Oracle Database Vault isn’t available on RDS for Oracle, which means you need to look at different approaches to secure sensitive data against privileged DBA access.

One effective alternative is to leverage Oracle’s built-in security features like Fine-Grained Access Control (FGAC) or Virtual Private Database (VPD) using DBMS_RLS. These tools help enforce data access policies dynamically, and I've successfully used them to restrict data visibility.

I also recommend using Oracle Data Redaction, if your licensing allows it. This feature masks sensitive information in query results, which can be very useful when managing access for privileged users.

Another layer of protection is encryption. Using Transparent Data Encryption (TDE) secures data at rest, and while it doesn't block all DBA access, it adds significant protection. Additionally, configuring Oracle Unified Auditing in RDS helps me keep track of any unusual activities by DBAs.

For other RDS engines, I've noted that PostgreSQL offers similar functionality with its Row-Level Security and pgAudit, while SQL Server includes options like Always Encrypted and native auditing. These features can provide you with comparable security controls tailored to each platform.

In summary, while RDS Oracle doesn't support Database Vault, combining these security features FGAC/VPD, Data Redaction, TDE, and auditing has worked well in my experience to protect sensitive data even against privileged DBA access.