How to fix the Oracle error ORA-15078: ASM diskgroup was forcibly dismounted?

In this post, you’ll learn more about the Oracle ErrorORA-15078: ASM diskgroup was forcibly dismounted with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15078: ASM diskgroup was forcibly dismounted

Reason for the Error ORA-15078: ASM diskgroup was forcibly dismounted

The diskgroup to which the I/O request was issued was forcibly dismounted (with the ALTER DISKGROUP DISMOUNT FORCE command) so that it could not be accessed.

How to fix the Error ORA-15078: ASM diskgroup was forcibly dismounted ?

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

Mount the diskgroup to allow access again.