Oracle Error ORA-15038: disk ‘string’ mismatch on ‘string’ with target disk group [string] [string]

Oracle Error Message

ORA-15038: disk ‘string’ mismatch on ‘string’ with target disk group [string] [string]

Reason for the Error

An attempt was made to mount into a disk group a disk whose recorded allocation unit size, metadata block size, physical sector size, or creation time stamp was inconsistent with the other disk group members.

Solution

Check if the system configuration has changed. Verify disk discovery string.