This article is transferred from http://blog.csdn.net/Devin_LiuYM/article/details/59539020
1. Close all oracle services. 2. Open the
registry: regedit Open the path: <Find the registry: Start->Run->regedit>
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
Delete all the files in this path that start with oracle The service name, this key is to identify the various services Oracle registered under Windows.
3. Open the registry and find the path:
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
Delete the oracle directory, where the software installation information of the Oracle database is registered.
4. Delete the registered oracle event log, open the registry
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application
to delete all items starting with oracle in the registry.
5. Delete the content about oracle in the environment variable path.
Right-click "My Computer->Properties->Advanced->Environment Variables->PATH Variable.
Delete the content of Oracle in this value. Note: Path records a bunch of operating system directories, in windows each The directories are separated by a semicolon (;), so be careful when deleting them.
Suggestion: when deleting the value of Oracle in the PATH environment variable, copy all the values into a text editor, find the corresponding Oracle value, and 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 above steps 1 to 5 are completed, restart the operating system.
7. After restarting the operating system, various Oracle-related processes will not be loaded. At this time, delete all data under Oracle_Home.
(Oracle_Home refers to the installation directory of the Oracle program)
8. Delete the oracle directory under C:\Program Files.
(This directory depends on the path where the Oracle installation is located)
9. Delete the oracle item under the start menu, such as:
C:\Documents and Settings\All Users\"Start" menu\Programs\Oracle -
This directory is slightly different for different installations of Ora10g.
If you don't delete the Oracle related menu directory under the start menu, it doesn't matter, this does not affect the installation of Oracle again. When installing Oracle again, the menu will be replaced.
At this point, Oracle has been completely uninstalled under the Windows platform.