Oracle Database Discussions

Hi,
I’ve been involved in projects that require different failover options for the Oracle Database including RAC, Dataguard, RMAN, etc. However, I recently embarked on some uncharted territory for me. I am working with a team that would like to use HACMP to failover the database.

Given the high cost of hardware, it seems to me that having an LPAR sitting around doing nothing except waiting for a catastrophe is a bit silly. I would much rather put that standby server to use by setting up RAC. That way, there is instantaneous failover and you can use the node for work. Slightly cheaper for licensing, we could use Active Dataguard.

Does anyone out there have any compelling advantages to using HACMP for failover instead of RAC/DG?