Question : Bring up SAN replicated RAC database from a Non-RAC instance

Hi,

Here is the situation:
We have a RAC database with ASM on the primary site working on 10gR2 on RHEL5.

The datafiles, controlfiles, redologs, undo tablespaces etc. are all on the SAN (Shared storage, as required for a RAC). The Oracle binaries are at the local disks of the nodes.

There is a DR site at a remote location with real time SAN replication (IBM global mirror, SNAP mirroring) happening. The setup at the DR site does not have RAC, but only a single instance Oracle.

Now, in case of both nodes going down at the primary site, how can the remote site bring up this database? We basically have two sets of redologs, two undo tablespaces etc. in the SAN now, but a single instance to mount and use all of them. Is this possible? What kind of init.ora parameters would be required at the DR site, if this is possible.

Important: We are not looking at using dataguard here.

Also, please let me know further information required from my side in case something is not clear from above.

Answer : Bring up SAN replicated RAC database from a Non-RAC instance

my opinion
you will need the init.ora from one of the node and set cluster_database=false and try to start the new instance. Keep all the directory structure same. I wpuld suggest to test any such setup before implementing in production and relying on it for DR.