Oracle 11g can be uninstalled from the Start menu , and you will need to delete the relevant contents in the registry at the same time.
operating System : WINDOWS10 Professional Edition.
Uninstall steps:
1. Disable Oracle services: Enter Computer Management, in the service, find all services at the beginning of Oracle , right click to select Stop.
2. In the Start menu , locate Universal Installer, run Oracle Universal Installer, and click Uninstall product.
3, in the Product List window, click Expand All, except oradb11g_home1, tick other items, click Delete.
Note that the right image cannot be ticked, otherwise the directly deleted form will not pop up. I wasted 1 hours in this blood lesson.
4. Press the Windows logo key and R key, open the Run window, enter regedit, open the registry , expand HKEY_LOCAL_MACHINE\Software, locate Oracle, delete
5. Expand HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, and then delete all entries that begin with Oracle.
6. Expand Hkey_local_machine\system\currentcontrolset\services\eventlog\application to remove all entries from Oracle; hkey_classes_ ROOT, delete the entry that begins with Ora.
7. Restart the computer, delete the Oracle directory, delete the Oracle installation directory app, etc. So the uninstallation is complete.
Reference articles
most love shes 3ni8,badkano. How to completely uninstall the Oracle 11g database . Baidu knows, 2016-3.
Perfect completely uninstall Oracle 11g database