classSwitchoverReadReplicaMessage(TypedDict,closed=True):db_instance_identifier:NotRequired["capo_rds.types.string.String"]"""<p>The DB instance identifier of the current standby database. This value is stored as a lowercase string.</p> <p>Constraints:</p> <ul> <li> <p>Must match the identifier of an existing Oracle read replica DB instance.</p> </li> </ul>"""