-- make sure the user have been granted the create view priv exclusively
-- But, why do u need to drop and recreate the view?
-- why not just recompile it?
dbadmin@mutation_mutation > get dr
  1      create or replace procedure drop_view
  2      as
  3      begin
  4      execute immediate ('drop view myview');
  5      execute immediate ('create view myview as select * from emp');
  6*    end;
dbadmin@mutation_mutation > /

Procedure created.

dbadmin@mutation_mutation > exec drop_view;

PL/SQL procedure successfully completed.