2 Default Schemas in OBIEE installation.

Good Afternoon
We currently have a database called DEV2, pointing to this database is an OBIEE 11.1.1.5.0 installation.
We want to install OBIEE 11.1.1.7.0 (Enterprise installation) on a new server and also point our DEV 2 database to this installation.
I read that you can break your installation if you overwrite the 2 schemas in our case already installed on 11.1.1.5.0.
So my question is can you create 2 new Schemas so it can be configured on its own and have nothing to do with the 11.1.1.5.0 installation but be 11.1.1.7.0 only?
Regards
Rayno

If I understand correctly you don't want to upgrade your existing environment, but create a new 11.1.1.7.0 env without breaking the first 11.1.1.5.0 Instance.
If yes than you need to create New set of schemas of 11.1.1.7.0 version, you can create them on same Database, but while creating new schemas give a new Prefix to it.

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