In the Global Database Name field of the Database Configuration Assistant (DBCA) Database Identification window, enter the database name in the form database_name.domain_name.
In the SID field, enter the system identifier. The SID defaults to the database name and uniquely identifies the instance that runs the database.
If you enable the Create as Container Database option, the database is created as a multitenant container database (CDB) that can support zero, one, or many user-created pluggable databases (PDBs).
If you do not want DBCA to create a PDB when it creates the CDB, enable the Create an Empty Container Database option.
If you want DBCA to create one or more PDBs when it creates the CDB, enable the Create a Container Database with one or more PDBs option. Then enter the number of PDBs to create in the Number of PDBs field. In the PDB Name field, specify the name to use for the PDB or PDBS to be created. When you create multiple PDBs, the PDB name you specify is used as a prefix for the PDBs to be created. For example, if you ask for 3 PDBs to be created and specify SANDBOXPDB as the PDB name, then the names of the PDBs created will be SANDBOXPDB1, SANDBOXPDB2, and SANDBOXPDB3.
See Also:
Oracle Database Concepts and Oracle Database Administrator's Guide for more information about CDBs and PDBs