I have an ASM disk group with external redundancy. I recently added a new disk to the disk group but the disk failed after a small time, and more or less it is lost. The disk group also failed and was unmounted automatically. When I try to mount the disk group I get "Insufficient number of disks for diskgroup error.
Can any one assist me on how to solve this problem?
( there is no rman backup, so other than restoring from backup if you have any ideas, I will very much appriciate it)
Thank you in advance.