Display all views on oracle database
for all views (you need dba privileges for this query)
select view_name from dba_views
for all accessible views (accessible by logged user)
select view_name from all_views
for views owned by logged user
select view_name from user_views
Open a new worksheet on the related instance (Alt-F10)
and run the following query
SELECT view_name, ownerFROM sys.all_views ORDER BY owner, view_name