The recommended character sets were selected based on the requirements of modern client operating systems.Oracle Universal Installer (OUI) presents the recommended list only, and Database Configuration Assistant (DBCA) must be used separately to choose a non-recommended character set.You can run DBCA in interactive mode or noninteractive/silent mode.
The use of the Unicode standard is indispensable for any multilingual technology, including database processing.
After a database is created and accumulates production data, changing the database character set is a time consuming and complex project.
You can create a database using the noninteractive/silent mode of Database Configuration Assistant (DBCA).
See the following documentation for details on using the noninteractive/silent mode of DBCA: Examples illustrate how to create a database with noninteractive/silent mode of Database Configuration Assistant (DBCA).
It is important to select the right character set for your database.
Oracle recommends AL32UTF8 as the database character set.
Proper distribution of files can improve database performance dramatically by distributing the I/O during file access.
You can distribute I/O in several ways when you install Oracle software and create your database.
You can create a database to erase information in an existing database and create a new database with the same name and physical structure.