From the Oracle database home bin directory, run the Database Configuration Assistant.
c:\oracle\product\10.2.0\db_1\bin> dbca.batSelect Oracle Real Application Clusters database and click Next.
Select Create a Database and click Next.
Make sure every node in the cluster is selected and click Next.
Select the General Purpose template and click Next. Note, at this point if you have specific requirements for your database such as a different character set, Custom Database may be a better choice.
Enter a global database name and a SID. Click Next to continue.
Check the Configure the Database with Enterprise Manager checkbox (it should be checked by default) and click Next.
Enter a password for the SYS account and click Next.
Select Automatic Storage Management (ASM) and click Next.
Select the disk group that we stamped as DATA and click Next.
Click Next.
Use the Browse button to find the disk group we stamped as FLASH and select it for the flash recovery area. Click Next to continue.
Click Next.
Do not specify any services. Click Next.
Click Next.
Tablespaces can be defined at this point or later through the Enterprise Manager. Click Next to continue.
Click Finish.
A summary of the selected options is shown at this point. Click OK to create the database.
This will take a few minutes.
The instance is now created. Click Exit to close the assistant.
The instance will now be started on each node.
Using the SYS account, we can now log into the Oracle Enterprise Manager using a browser. A shortcut to the proper URL should be in the Start menu, in this case it is http://rac1:1158.