Software environment: 1, Windows 2000 Oracle 8.1.7 2, Oracle installation path is: C: / Oracle
Implementation: 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
5, run the regedit, select HKEY_LOCAL_MACHINE / SOFTWARE / ORACLE, press Del to delete this entry.
6. Run the regedit, select HKEY_LOCAL_MACHINE / SYSTEM / CURRENTCAL_MACHINE / SYSTEM / CURRENTCONTROLSET / SERVICES to scroll through this list, remove all Oracle entrances.
7. Run Refedit, HKEY_LOCAL_MACHINE / System / CurrentControlSet / Services / EventLog / Application, delete all Oracle portals.
8, Start -> Settings -> Control Panel -> System -> Advanced -> Environment Variable Remove Environment Variables ClassPath and Path Confiting Oracle Settings
9. From the desktop, the Startup group, the program menu, delete all groups and icons related to Oracle
10, delete / program files / oracle directory
11. Restart your computer, then you can completely remove the directory where Oracle is located
12. Delete the file 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, etc.
13, if there is a tag section of [Oracle] in the win.ini file, delete this paragraph
14. If necessary, remove all Oracle-related ODBC DSN
15. Go to the Event Viewer to delete Oracle-related logs
Description: If there is a case where some DLL files cannot be deleted, do not use it, restart, start new installation, installation, select a new directory, then after installation and restart, old directory and file can be deleted Lost.
