ORA-15075: disk(s)are not visible cluster-wide Cause: An ALTER DISKGROUP ADD DISK command specified a diskthat could
not be discovered by one or more nodes in a RAC cluster configuration. Action: Determinewhich 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.