How to fix the Oracle error ORA-15412: Operation on disk group string is incompatible under appliance mode.?

In this post, you’ll learn more about the Oracle ErrorORA-15412: Operation on disk group string is incompatible under appliance mode. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15412: Operation on disk group string is incompatible under appliance mode.

Reason for the Error ORA-15412: Operation on disk group string is incompatible under appliance mode.

An attempt was made to do an operation that resulted in dropping all disks in a failure group or creating a new failure group.

How to fix the Error ORA-15412: Operation on disk group string is incompatible under appliance mode. ?

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

Disable appliance mode, perform the operation and reenable appliance mode. WARNING: To reenable appliance mode, ensure the following constraints are met:

* There are a sufficient number of disks in each failure group.

* All failure groups have an equal number of disks.

* There are no offline disks in the disk group.

* Every disk in the disk group is of the same type (flash or hard disk).

* All disks in the disk group have an equal size.