How to fix the Oracle error ORA-15284: ASM terminated ALTER DISKGROUP ONLINE?

In this post, you’ll learn more about the Oracle ErrorORA-15284: ASM terminated ALTER DISKGROUP ONLINE with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15284: ASM terminated ALTER DISKGROUP ONLINE

Reason for the Error ORA-15284: ASM terminated ALTER DISKGROUP ONLINE

None of the disks specified by ALTER DISKGROUP ONLINE could be brought ONLINE.

How to fix the Error ORA-15284: ASM terminated ALTER DISKGROUP ONLINE ?

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

Inspect additional error messages and the alert log to determine why the specified disks cannot be brought ONLINE.