How do you remove oracle sid from registry?

To remove the Oracle SID from the Windows registry, you need to open the Registry Editor by typing regedit in the Run dialog (Win + R). Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE and look for the key corresponding to the SID you want to remove. Right-click on the key associated with the SID and select "Delete." Always back up the registry before making changes to avoid accidental data loss.