I Accidentally deleted a folder in ClearCase explorer, is there anyway to recover that?
(the view was snapshot)
I tried comparing versions and check the version tree but found nothing.
If you have deleted (rmname'd) the folder, then you can easily recover from that.
See "Undo remove file in ClearCase".
But if it was a new folder that you didn't yet add to source control, then ClearCase (in a snapshot view) isn't aware of it, and you need to restore it through other tools (like a Recuva File Recovery).
If it was deleted, but was already in source control, all you need to do (again in a snapshot view) is to use a cleartool update
:
cleartool update /path/to/parent/folder
That will restore the content of the parent folder, including the folder you just erased.