How to fix the Oracle error KFNDG-00406: disk group (string) is in use by CSS?

In this post, you’ll learn more about the Oracle ErrorKFNDG-00406: disk group (string) is in use by CSS with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

KFNDG-00406: disk group (string) is in use by CSS

Reason for the Error KFNDG-00406: disk group (string) is in use by CSS

Cluster Synchronization Service(CSS) was using the disk group to be renamed.

How to fix the Error KFNDG-00406: disk group (string) is in use by CSS ?

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

Refer to crsctl command to relocate voting disks from disk group.