How to fix the Oracle error INS-40405: The installer has detected a configured instance of Oracle Grid Infrastructure software on the system.?

In this post, you’ll learn more about the Oracle ErrorINS-40405: The installer has detected a configured instance of Oracle Grid Infrastructure software on the system. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

INS-40405: The installer has detected a configured instance of Oracle Grid Infrastructure software on the system.

Reason for the Error INS-40405: The installer has detected a configured instance of Oracle Grid Infrastructure software on the system.

Cause: You selected to install and configure a new Oracle Grid Infrastructure installation (Oracle Clusterware and Oracle ASM). However, only one installation of Oracle Clusterware and Oracle ASM can be configured on a server at the same time.

How to fix the Error INS-40405: The installer has detected a configured instance of Oracle Grid Infrastructure software on the system. ?

You can fix this error in Oracle by following the below steps

Action: Deconfigure the existing Oracle Grid Infrastructure software before installing and configuring a new instance of Oracle Grid Infrastructure software.