以下のクエリを試してみてください:
select text from ALL_VIEWS where upper(view_name) like upper(<view_name>);
mviewsの場合:
select query from ALL_MVIEWS where upper(mview_name) like upper(<mview_name>);
以下のクエリを試してみてください:
select text from ALL_VIEWS where upper(view_name) like upper(<view_name>);
mviewsの場合:
select query from ALL_MVIEWS where upper(mview_name) like upper(<mview_name>);