Ways to completely delete an Oracle database _oracle

1. Turn off all Oracle services. Can be shut down in Windows Services Manager;
2. Open the registry: Regedit Open the path:
Hkey_local_machine\system\currentcontrolset\services\ removes all Oracle-initiated service names under this path, which identifies Oracle's various services registered under Windows!

3. Open the registry and locate the path:
Hkey_local_machine\software\oracle deletes the Oracle directory, which registers software installation information for the Oracle database.

4. Delete the registered Oracle Event log and open the registry hkey_local_machine\system\currentcontrolset\services\eventlog\application Deletes all items in the registry that begin with Oracle.

5. Delete the content about Oracle in the environment variable path. Right-click My Computer--> Properties--> Advanced--> environment variable-->path variable. Deletes Oracle's content in this value. Note: A directory of operating systems is recorded in path, separated by semicolons (;) between directories in Windows, and noted when deleted. Recommendation: When deleting a value for Oracle in the PATH environment variable, copy the value to a text editor, find the corresponding Oracle value, delete it, and then copy the modified string and paste it into the PATH environment variable, which is relatively safe.

6. Restart the operating system.
After the 1~5 steps are completed, restart the operating system.

7. Various Oracle-related processes are not loaded after restarting the operating system. This deletes all the data under Oracle_home. (Oracle_home refers to the installation directory for Oracle programs)

8. Delete the Oracle directory under C:\Program files. (This directory depends on the path to Oracle installation)

9. Delete the Oracle items under the Start menu, such as: C:\Documents and Settings\All users\"Start menu \ program \oracle-ora10g different installation This directory is slightly different. If you do not delete the Oracle related menu directory under the Start menu, this does not affect the installation of Oracle again. When Oracle is installed again, the menu is replaced.

At this point, Oracle on the Windows platform is completely uninstalled