Please provide pointers for any documentation related to installing CS Active SOA in a cluster. One more question is, is it possible to configure Oracle DB with CentraSite Active SOA in place of Tamino?
for setting up CentraSite HA we strongly recommend to use our Global Consulting Services (GCS) group to support you.
You need to have a decent knowledge of the CentraSite architecture to ensure a smooth HA installation procedure Your question regarding Oracle indicates that the expertise in GCS regarding CentraSite architectures might be valuable for you.
CentraSite is tightly bound to Tamino and con not be used with any other datastore as of today.