begin 

declare
	procedure dyn_sql(p_sql in varchar2) 
	is
	begin
		execute immediate p_sql;
	exception
		when others then
			return;
	end;

begin
		--|
		--|drop packages and sequences
		--|

	begin
		for r in (select object_type, object_name from user_objects where object_type in ('PACKAGE', 'SEQUENCE') and object_name like 'OWBB%' )
		loop
			dyn_sql('drop ' || r.object_type || ' ' || r.object_name);
		end loop;
	exception
		when others then
			return;
	end;	


end;

end;