How to fix the Oracle error ORA-15038: disk ‘string’ mismatch on ‘string’ with target disk group [string] [string]?

In this post, you’ll learn more about the Oracle ErrorORA-15038: disk ‘string’ mismatch on ‘string’ with target disk group [string] [string] with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

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

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.

How to fix the Error ORA-15038: disk ‘string’ mismatch on ‘string’ with target disk group [string] [string] ?

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

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