ODA: Does Oracle Database Appliance support an active/standby configuration for simple failover of a single-instance?
By uwes on Dec 07, 2011
The preferred way to achieve Active/Passive protection for DBs is RAC One Node. RAC One node is fully support solution and integrated with other features in the Clusterware and RAC. Also RAC One node will allow your customer to scale to RAC (2 nodes) easily with very minimal down time.
Please refer to MOS note 790189.1 to get more information.