Database vault still exposes sqltext and bind variables

Hello Experts .

We have tight security and ITR/ITER databases . We are planning to Implement Database Vault to application schema masking .

During testing , Even if we are adding schema into a realm , As sysdba user we can still see the full sql text and bind values used by application Schema .

Are there any ways to mask them in Database vault , have you faces any such challenges are there any work around ?

Thanks

Bhabagrahi