Software Environment: 1. Windows 2000 Oracle 8.1.72, Oracle Installation Path is: C: / Oracle Implementation Method: 1, Start -> Settings -> Control Panel -> Administrative Tools -> Services Stop all Oracle services. 2, start-> program -> Oracle - OraHome81-> Oracle Installation Products-> Universal Installer Uninstall all Oracle products, but universal instager itself cannot be deleted 3, running regedit, select HKEY_LOCAL_MACHINE / SOFTWARE / ORACLE, press Del to delete this entry . 4. Run the regedit, select HKEY_LOCAL_MACHINE / SYSTEM / CURRENTCAL_MACHINE / SYSTEM / CURRENTCONTROLSET / SERVICES to scroll through this list, and remove all Oracle entry. 5. Run Refedit, HKEY_LOCAL_MACHINE / System / CurrentControlSet / Services / EventLog / Application, delete all Oracle portals. 6, Start -> Settings -> Control Panel -> System -> Environment Variable Delete Environment Variables ClassPath and Path Related to Oracle Settings 7, from the desktop, STARTUP group, program menu, delete all Related to Oracle Group and Icon 8, delete / program files / oracle directory 9, restart your computer, and restart the directory 10 where Oracle is located, delete files related to Oracle, select Oracle's default directory C: / Oracle Delete this entry directory and all subdirectories, and remove the following files from the Windows 2000 directory (generally c: / winnt) Oracle.ini, ORADIM73.INI, ORADIM80.INI, ORAODBC.INI, and more. 11. If there is a tag segment of [Oracle] in the win.ini file, delete this section 12, if necessary, remove all Oracle-related ODBC DSN 13, to the Event Viewer, remove Oracle-related log description: If there is If the individual DLL file cannot be deleted, it is not necessary to restart, start new installation, installation, select a new directory, then after installation and restart, the old directory and file can be deleted.
