Let’s consider a poor man’s data encryption in the database. We’ll use AES128 CBC algorithm to encrypt the data. The application is written in such way that it can encrypt/decrypt the data while doing database operations. This solution is license free, works with no additional database licenses. A new requirement has arrived – the data must be replicated to the target database, which does not use any encryption. The replication and decryption would be performed by Oracle GoldenGate. Let’s see how this can be done and what is the overhead of the decryption process.