For renaming a Clearcase View requires the renaming of both the storage and the tag. Here are the basic steps for the same but you are recomended to refer the Product Documentation if it doesn’t work**:
Stop the view
$ cleartool endview view-tag
Remove the view tag to untag the view
$ cleartool rmtag -view view-tag
Remove the Clearcase registry entry to unregister the view object
$ cleartool unregister -view view-storage-path-name.vps
Rename the view storage directory
$ mv old-view-storage.vps
new-view-storage.vps
Register the new name fo the view storage
$ cleartool register -view new-view-storage-path-name.vps
Create a new tag for the view
$ cleartool mktag -view -tag new-view-tag
new-view-storage-path-name.vps
As it is on Solaris machine, no need to start the view explicitly. You can directly start working by setting the new view.