Understand the benefits of using Oracle Database Configuration Assistant (DBCA) to create your Oracle RAC databases.
Oracle recommends that you use DBCA to create your Oracle RAC database, because preconfigured databases optimize your environment for features such as the server parameter file (SPFILE), and automatic undo management.
DBCA enables you to create both policy-managed and administrator-managed databases. With DBCA, you can also create site-specific tablespaces as part of database creation. If you have data file requirements that differ from those offered by DBCA templates, then create your database with DBCA and modify the data files later. You can also run user-specified scripts as part of your database creation process.
DBCA also configures your Oracle RAC environment for various Oracle high availability features, such as cluster administration tools. DBCA also starts any database instances required to support your defined configuration.
You can use DBCA to create a database from templates supplied by Oracle, or from templates that you create. The templates contain settings optimized for a particular type of workload.
Oracle ships templates for the following two workload types:
General purpose or transaction processing
For more complex environments, you can select the Custom Database option. This option does not use templates and results in a more extensive interview, which means that it takes longer to create your database.
Click Show Details to see the configuration for each type of database. Select the template suited to the type of workload your database supports. If you are not sure which to choose, then select the default General Purpose or Transaction Processing template.