Oracle Error Message
KFNDG-00304: unable to access heartbeat block of the device string:string
Reason for the Error
Heartbeat block of the disk was corrupt.
Solution
Verify disk header with ASM utilities, retry renamedg.
KFNDG-00304: unable to access heartbeat block of the device string:string
Heartbeat block of the disk was corrupt.
Verify disk header with ASM utilities, retry renamedg.