How to fix the Oracle error ORA-15075: disk(s) are not visible cluster-wide?

In this post, you’ll learn more about the Oracle ErrorORA-15075: disk(s) are not visible cluster-wide with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15075: disk(s) are not visible cluster-wide

Reason for the Error ORA-15075: disk(s) are not visible cluster-wide

An ALTER DISKGROUP ADD DISK command specified a disk that could not be discovered by one or more nodes in a RAC cluster configuration.

How to fix the Error ORA-15075: disk(s) are not visible cluster-wide ?

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

Determine which disks are causing the problem from the GV$ASM_DISK fixed view. Check operating system permissions for the device and the storage sub-system configuration on each node in a RAC cluster that cannot identify the disk.