Enable database TLS
Turn on TLS for a database on an OCI cluster that was created without it. Databases created on OCI clusters have TLS from the start. Plaintext connections keep working inside the cluster and, for PostgreSQL, MySQL and MariaDB, through the external connection, so existing applications are not affected. On Redis and Valkey the external connection then requires TLS: external clients have to switch to rediss:// with the CA certificate. TLS cannot be turned off again. The operation is asynchronous and restarts the database once: the status is updating until it is back to ready, and then tls_enabled is true and tls_ca_certificate holds the CA certificate on the Get Database endpoint. Calling it on a database with TLS already on changes nothing. Allowed only when the database status is ready and the database is not suspended.