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Overview
Now, disk in ASM diskgroup CAN get corrupted and depends on the way it was corrupted, MAYBE it can be fixed. From my experience there are couple ways how this can happen:
- OS Overlapped with the ASM disk
- Manual Corruption
- Oracle Bug
So let's see what we can do:
Oracle Bug
Now the disk can get corrupted for a lot of reasons and that's why it is always good to have NORMAL or HIGH redundancy. In either case, let's see what happens if we can fix the corruption:
Check the header of the disk