When you run Oracle Universal Installer (OUI) to install Oracle RAC, you can select the Typical or the Advanced installation type.
The Typical installation type installs a default configuration of Oracle Database, with basic configuration choices. Oracle recommends that most users select Typical as their installation type.
The Advanced installation type is for customized installations. Use Advanced installation only when you have a specific requirement for it, such as:
Adding specific components to your installation
Requiring different passwords for the
Using a different database character set than is in use on your servers
Changing product languages
Other nonstandard configurations