You can use the CREATE DATABASE SQL statement to create a database. If you do so, you must complete additional actions before you have an operational database. These actions include creating users and temporary tablespaces, building views of the data dictionary tables, and installing Oracle built-in packages. These actions can be performed by executing prepared scripts, many of which are supplied for you. If you have existing scripts for creating your database, consider editing those scripts to take advantage of new Oracle Database features. Oracle provides a sample database creation script and a sample initialization parameter file with the Oracle Database software files. Both the script and the file can be edited to suit your needs.
Upgrade an existing database.
If you are already using an earlier release of Oracle Database, database creation is required only if you want an entirely new database. You can upgrade your existing Oracle Database and use it with the new release of the database software. The Oracle Database Upgrade Guide manual contains information about upgrading an existing Oracle Database.
The remainder of this chapter discusses creating a database manually.
Manually Creating an Oracle Database
This section takes you through the planning stage and the actual creation of the database.
Considerations Before Creating the Database
Database creation prepares several operating system files to work together as an Oracle Database. You need only create a database once, regardless of how many data files it has or how many instances access it. You can create a database to erase information in an existing database and create a new database with the same name and physical structure.
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