Before you create a database that uses Oracle Automatic Storage Management (Oracle ASM), you must run the root.sh script.

For this reason, you cannot create a database using Oracle ASM as the storage option for database files during a silent mode installation. Instead, you can complete a software-only installation using silent-mode, and then run the Oracle Net Configuration Assistant and DBCA in silent mode after you have completed the software-only installation and you have run the root.sh script.