How to uninstall oracle database

Steps to uninstall Oracle database: Close the instance Back up the database Run the installer and select the complete removal mode Select the components to be uninstalled Uninstall Oracle Clean the registry Manually delete the remaining files and folders

How to uninstall the Oracle database

Step 1: Shut down the Oracle instance

Find "Services" in the control panel "application, find and stop the "OracleService" service.

Step 2: Back up the database files

Before performing the uninstall, it is strongly recommended to back up the database files. You can create backups using the Oracle RMAN tool or other backup software.

Step 3: Run Oracle Installer

Locate the Oracle installer, usually located on the installation media or Oracle home directory. Select the Uninstall Oracle Database Software option.

Step 4: Select uninstall mode

Select "Completely remove from system" mode. This will remove all Oracle files and registry keys.

Step 5: Select the component

Select the Oracle component to be uninstalled. Normally, all components should be selected.

Step 6: Uninstall Oracle

The uninstall process will begin and may take some time, depending on system configuration and installation size.

Step 7: Clean the registry

After the uninstallation is complete, run the following command to clean up the Oracle entries in the registry:

<code>regedit</code>

Navigate to the following password keys and delete them:

• HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
• HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ORACLE

Step 8: Delete the remaining Files and Folders

Manually delete the following directories and files if they exist:

• ##
• \admin
• \product
• \oradata

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