No free space on disk slice - and throwing I/O error

Hi,
In one of my LDOMs, one slice is full. - unfortuantely that has the Oracle binaries
+/dev/dsk/c0d2s3 9.8G 9.8G 0K 100% /ora00+
But if do an ls on the slice , it is throwing I/O Error
ldg2#cd /ora00
ldg2#ls
+.: I/O error+
ldg2#
On the same disk , all other different slices are working fine.
How wil i recover from this ?

What is the filesystem on c0d2s3? ufs?
What is the backend of the vdisk? Is it a physical disk, a file?
Can you provide the output of the command "prtvtoc /dev/rdsk/c0d2s2"
You can try to unmount the partition, then re-mount it. Also try to mount the partition read-only.

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