Tente a consulta abaixo para visualização:
select text from ALL_VIEWS where upper(view_name) like upper(<view_name>);
Para visualizações:
select query from ALL_MVIEWS where upper(mview_name) like upper(<mview_name>);
select text from ALL_VIEWS where upper(view_name) like upper(<view_name>);
select query from ALL_MVIEWS where upper(mview_name) like upper(<mview_name>);
