Can I download DBCA for Oracle Express Edition?
Understand how to install the DBCA in Oracle 10g Express Edition and why you cannot simply download DBCA in Oracle in this expert tip.
How can I open the Database Configuration Assistant (DBCA) in Oracle 10g Express Edition and how can I download the DBCA?
The DBCA is a program installed when you install the Oracle software. You cannot download it. I've never used the Express Edition, but if the DBCA utility is not present in ORACLE_HOME/bin, then that edition does not use the DBCA.