How to remove Oracle completely

Oracle Software Environment:
1. Windows 2000+oracle 8.1.7
2, the ORACLE installation path is: C:\ORACLE Implementation method:
1. Start-> Setup-> Control Panel-> Admin Tools-> Service Stop all Oracle services. 2, Start-> Program->oracle-orahome81->oracle installation products-> Universal Installer Uninstall all Oracle products, but Universal Installer itself can not be deleted 3, run regedit, select HKEY_LOCAL_MACHINE Oftware\oracle, press del key to delete this entry. 4, run regedit, select HKEY_LOCAL_MACHINE Ystem\currentcontrolset ervices, scroll this list, delete all Oracle portals. 5, run RefEdit, HKEY_LOCAL_MACHINE Ystem\currentcontrolset Ervices\eventlog\application, delete all Oracle portals. 6, Start-> Settings-> Control Panel-> System-> Advanced-> Environment Variables Delete environment variables classpath and path about Oracle 7, from the desktop, startup (startup) Group, program menu, delete all the Oracle-related groups and icons 8, delete \ Program Files\oracle Directory 9, restart the computer to completely remove Oracle Directory 10, delete Oracle-related files, select the default directory of Oracle C:\Oracle, delete this entry directory and all subdirectories, and remove the following files from the Windows 2000 directory (typically C:\WINNT) Oracle.ini, Oradim73. INI, Oradim80. INI, Oraodbc.ini and so on. 11, WIN. INI file, if you have an ORACLE tag segment, delete this paragraph 12 and, if necessary, delete all Oracle-related ODBC DSN 13, and in Event Viewer, delete the Oracle-related log Description: If there is an individual DLL file that cannot be deleted, don't bother, reboot, Start a new installation, install, select a new directory, then, after installation and restart, the old directory and files can be deleted.