You can create a single-instance database on a cluster running from an Oracle home with the Oracle RAC option disabled. To create an Oracle home on a cluster with Oracle RAC disabled, you can select local and non-cluster on the Node Selection Page of Oracle Universal Installer when installing the Oracle Database software. You can also performed a one-node cluster (with Oracle RAC) installation, but later disable the Oracle RAC option.
Perform the following procedures to convert this type of single-instance database to an Oracle RAC or Oracle RAC One Node database:
Use DBCA to create a preconfigured image of your single-instance database as described in "Use DBCA to Create an Image of the Single-Instance Database" To perform the conversion manually, shut down the single-instance database.
Change the directory to the lib subdirectory in the rdbms directory under the Oracle home.
Relink the oracle binary by running the following commands:
make -f ins_rdbms.mk rac_on make -f ins_rdbms.mk ioracle
Continue with step 2 in "Single-Instance Database on a Cluster Running from an Oracle RAC-Enabled Home".