Windows completely remove Oralce

Here are the steps to completely remove Oralce:
1. Start-> Settings-> Control Panel-> Management Tools-> Services
Stop all Oracle Services.

2. Start-> Program->oracle-orahome81->oracle installation products->
Universal Installer
Uninstall all Oracle products, but universal installer cannot be deleted by itself

5. Run regedit, select Hkey_local_machine\software\oracle, and press Del to delete this entry.

6. Run regedit, select HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, scroll
This list, delete all Oracle portals.

7, running RefEdit,
Hkey_local_machine\system\currentcontrolset\services\eventlog\application,
Delete all Oracle portals.

8. Start-> Set-> Control Panel-> System-> Advanced-> Environment variable
Delete environment variables classpath and path for Oracle settings

9. Remove all Oracle-related groups and icons from the desktop, Startup group, program menu
10. Delete \program Files\oracle Directory
11. Restart the computer to completely remove the Oracle directory after restarting

12. Delete the Oracle-related files, select the default directory where Oracle is located C:\Oracle, delete this entry
Directory and all subdirectories, and remove the following from the Windows 2000 directory (typically C:\WINNT)
Pieces Oracle.ini, Oradim73. INI, Oradim80. INI, Oraodbc.ini, and so on.

13, WIN. INI file if there is a [ORACLE] tag segment, delete the segment

14. If necessary, delete all Oracle-related ODBC DSN

15. To the Event Viewer, delete the Oracle-related logs

Windows completely remove Oralce