Once the Oracle software has been installed on the machine, there are a number of tasks you need to perform to create a functioning Oracle database. For example, on Unix systems, the root user must run a script called root.sh after installation.

We also recommend that you run the installer to check the list of components actually installed. In some cases, the Oracle Installer will install components that you did not request and that are not necessary. For example, the Oracle Web Server is automatically installed on some platforms, even though it was not requested and requires separate licensing. If you find an unnecessary component, it can be removed with the installer.