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Hello, we have a two node RAC environment, version 11.2
Each node already has four production instances, we are now being asked to create a new cluster database and add a instance to each node.
I would like to do a risk assessment, is it safe to create a new db and add instances while the other four production instances are up and running. They all share the same oracle home and listener.
The other instances / databases are not required to be bring down when you create new database. Make sure you still have room to create the new database i.e memory, cpu capacity and disks.