On
Windows 95 and Windows 98:
1.
Ensure you shutdown your Oracle. Right
click on the Oracle Icon in the toolbar and click on the shutdown option.
2.
Un-install all your Oracle products if possible.
Use universal installer to do that. Ignore
this step if you don’t have universal installer on your machine.
3.
In regedit, go to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE.
4.
Delete the ORACLE key.
5.
Edit your AUTOEXEC.BAT file and remove your %ORACLE_HOME%\bin and JRE paths from
the path setting.
6.
From the Windows Explorer (or from the command prompt), delete the Oracle
directory (Oracle Base).
7.
Delete <system_drive>:\Program Files\Oracle (from the Windows NT Explorer
or from the command prompt).
8.
Delete Icons from <system_drive>: \Windows\Start Menu\Programs\Oracle -
<HOME> and <system_drive>:\Windows\StartMenu\Programs\Oracle
Installation Products. Where <HOME> is the previous HOME name.
9.
Reboot your computer.
On
Windows NT:
1.
Ensure you are logged in as a user with Administrator privileges.
2.
Stop all Oracle Services through Control Panel Services.
Use universal installer to un-install your Oracle products.
Ignore un-install if you don’t have universal installer on your
machine.
3.
Using regedit (at the command prompt, type regedit), go to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
and delete the ORACLE key.
4.
Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, and remove all keys
under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services that begin with
ORACLE.
5.
Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\Application,
and remove all keys under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\Application
that begin with ORACLE.
6.
Close regedit.
7.
From the Control Panel, open System.
8.
If JRE was installed by Oracle, remove the %ORACLE_HOME%\BIN path and the JRE
path. For example, you may see a path similar to this one: C:\ORACLE\ORAxx\BIN;G:
\Program Files\Oracle\jre\1.1.7\bin. Go to Start > Control Panel > System
> Environment tab. Click on the system variable path and modify the path.
9.
Delete Icons from <system_drive>:\Winnt\Profiles\All Users\Start
Menu\Programs\Oracle - <HOME> and <system_drive>:\Winnt\Profiles\All
Users\Start Menu\Programs\Oracle Installation Products. Where <HOME> is
the previous HOME name.
10.
Delete <system_drive>:\Program Files\Oracle (from the Windows NT Explorer
or from the command prompt).
11.
Reboot your computer.
12.
Delete all ORACLE_BASE directories (You can find the Oracle homes listed in
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\ORACLE_HOMES).