How to fix the Oracle error KFNDG-00304: unable to access heartbeat block of the device string:string?

In this post, you’ll learn more about the Oracle ErrorKFNDG-00304: unable to access heartbeat block of the device string:string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

KFNDG-00304: unable to access heartbeat block of the device string:string

Reason for the Error KFNDG-00304: unable to access heartbeat block of the device string:string

Heartbeat block of the disk was corrupt.

How to fix the Error KFNDG-00304: unable to access heartbeat block of the device string:string ?

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

Verify disk header with ASM utilities, retry renamedg.

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