There are some requirements where you need to know who are all the users assigned to a particular siebel View,you can get the user list by running below query on the database.
SELECT DISTINCT
usid.per_fst_name || ' ' || usid.per_last_name "Users"
FROM siebel.s_resp resp,
siebel.s_app_view vi,
siebel.s_app_view_resp inter,
siebel.s_per_resp usid
WHERE vi.row_id = inter.view_id
AND resp.row_id = inter.resp_id
AND vi.name = 'Contact List View'
AND usid.resp_id = resp.row_id
In the above query I have queried for 'Contact List View',Just replace it with your view to get list of users associated to it.
Hope this helps...