有关oracle cursor游标无记录时的操作问题？

[tvhtb]

当游标没记录时，我查到的资料都是exit操作，如下：
fetch cur_servhis into thisservhis;
exit when cur_servhis%notFound;
我现在需要当没记录时，要执行一个insert操作，请问怎么写？

[qiaozhiwei]

open cur_servhis;
loop
fetch cur_servhis into thisservhis;
exit when cur_servhis%notFound;
end loop;
if cur_servhis%rowcount = 0 then
insert into ......
end if;
close cur_servhis;

[dinya2003]

.....
open c;
loop
fetch c into user_id,user_name;
if c%rowcount=0 then
insert into dinya_user values(1,'E');
commit;
exit;
end if;
end loop;
close c;
end ;