As you all are aware, the process of uninstalling Oracle on Windows is totally different from the traditional step used in uninstalling a program in Windows.
The following steps are vital in order not to encounter an error when reinstalling oracle unto the Server. The uninstallation process is similar to uninstalling Oracle to that of Oracle Database 11g. Step 1 — Delete the Associated Environment Variable — Deleting the environment variable would definitely mitigate a whole lot of errors if your plan to re-install the Oracle software.
Step 2 — Delete Registries : During the installation, oracle database makes some registries in windows system to store the information of its configurations as well as for proper functioning of Oracle Windows Services. To Uninstall Oracle Database 12c completely from your system you need to properly stop all the Oracle database services which run in the background. Also if you are planning for re-installing the Oracle Database software then you also need to delete all the configuration settings.
In short to ensure the smooth and errorless re-installation of any version of oracle database software, without formatting your computer system, you need to delete all the Oracle Database Registries. Registries are very fragile part of any windows system thus messing with them can be catastrophic and can harm your system therefore be careful while deleting them. I would highly suggest you to take their backup. To access this registry first go the following key. Next , we have to delete all the registries for Oracle Database Services.
To access these registries first go to the following key. Under the Services directory you have to find all the Registries which are responsible for your oracle database services. If Oracle Database 12c is the only product from Oracle that is installed on your system then search for all the registries whose names start with Oracle and Delete them.
If you have other products from Oracle installed on your system then be careful and delete accordingly. In the screenshot below you can see some general Oracle Service Registries. Step 3 — Restart your system : Next you have to restart your system so that your operating system can blend in all the settings which we just altered. Otherwise, go to step 6 to deinstall Net8 services. Oracle Database Configuration Assistant starts. Follow the remaining windows to deinstall the Oracle8 i database.
The Welcome window for Oracle Universal Installer appears. The Inventory dialog box appears. Check the boxes of components to deinstall. Click Remove. The Inventory Confirmation window appears. Note : A message may display indicating that removing some components may cause other components to not function properly. The components are deinstalled from your computer. The Inventory dialog box appears without the deinstalled components.
Click Exit to exit Oracle Universal Installer. Notify me of new comments via email. Notify me of new posts via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Deinstall the Oracle database Software manually from window Server Steps to uninstall or manually delete the Oracle DB software from windows server: 1. Delete the Oradata folder. Delete all the Datafiles location 3. Delete the Oracle inventory folder.
Exit Regedit. Finish the uninstalled process of Oracle.
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