General Notes on Oracle Data Dictionary The Oracle Data Dictionary contains metadata that is readily available via database views.

The vulnerability will not affect data stored in the Oracle data dictionary, which stores the core information, such as tables of user accounts and database objects, used by the Oracle database.

Oracle denies it was breached after a threat actor claimed to be selling 6 million data records allegedly stolen from the company's Oracle Cloud federated SSO login servers.

(Download PDF of their paper.) "The paper published by SANS exposes the location in the Oracle data dictionary where the Oracle password hashes are stored.