I. Installing Oracle Database Express Edition »▲

You can find the software on the official Oracle page : http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html.

Before you install Oracle Database XE 11.2, make sure you have uninstalled all other Oracle databases from your computer.

Unzip the downloaded file and open the folder. Double-click setup.exe  The installation screen appears (Figure 1).

Figure 1: Installation screen

Click on the Next button.

• Accept the terms and conditions of use and press Next. Next.
• Choose the installation directory. Click on Browse to change the default directory. Be careful not to select a directory with spaces. Click on Next.

Figure 2: Location of the installation

• Choose the password used for the SYSTEM, and confirm it. Click on Next.
• In the summary window, click Install if you are satisfied, or on Back to go back and change some elements.

  

  Figure 3: Installation summary

• Clik on Install to complete the installation.

Normally, at the end of the installation, the database is an operator and is started. If it’s not the case :

• go to Start menu – All Programs – Oracle Database 11g Express Edition ;
• click on Start Database.

To stop the base, you have to click on Stop Database.

In the Start menu – All Programs – Oracle Database 11g Express Edition, click Run SQL Command Line.

In the command line, type:

• connect ;
• SYSTEM: to connect using the user-name SYSTEM ;
• the password you gave during the installation.

The message Connected appears.

To make your database accessible by remote clients, type the command: EXEC DBMS_XDB.SETLISTENETLOCALACCES (FALSE)..

Source: click here