Steps to Install Oracle 10g Express edition 

Download

https://www.dropbox.com/s/suo5br29hze7e13/Oracle%2010g%20Express%20Edition.zip?dl=0

Step 1: Run the setup file and continue the installation process.

Step 2: Before completing the installation it will ask you for a password

Example:
Password   	  : sys
Re-enter password : sys

Step 3: Click next and finish the installation process.

Step 4: Click start button -> goto Oracle Database 10g express edition -> go to-> database home page

Step 5: It will open in your default browser

              User name  : system
              Password   : sys

Step 6: Go to Administration -> Database user -> select the user HR

1. Provide the new password
2. Change the status from locked to unlocked
3. Check the dba option
4. And click check all option at the bottom of the form.
5. Then select Alter user tab at the top right of the form

Log out the session

Step 7: Now click the login button and type user name as HR and Password: (your password )
Choose sql -> sql commands.

Execute your query by using ctrl + Enter shortcut key  or use Run button at the right side top corner.