oracle触发器报异常

oracle触发器报异常:

我要问的问题，写在下面的触发器里了，请大家多多指教


create or replace trigger tg_kfs_res
after insert on t_kfsample
for each row
declare
v_asy_time date;
v_goodorbad number;
v_fe2o3 number;
v_sio2 number;
v_al2o3 number;
v_cao number;
v_mgo number;
v_na2o number;
v_k2o number;
v_s number;
v_p number;
v_as number;
v_b number;
v_cr number;
v_cu number;
v_ni number;
v_mo number;
v_co number;
v_v number;
v_sn number;
v_ba number;
v_hg number;
v_count number;
v_delegate varchar2(9); --委托快分码
v_s_fe2o3 number;
v_s_sio2 number;
v_s_al2o3 number;
v_s_cao number;
v_s_mgo number;
v_s_na2o number;
v_s_k2o number;
v_s_s number;
v_s_p number;
v_s_as number;
v_s_b number;
v_s_cr number;
v_s_cu number;
v_s_ni number;
v_s_mo number;
v_s_co number;
v_s_v number;
v_s_sn number;
v_s_ba number;
v_s_hg number;
v_s_count number;
v_s_asy_time date;
v_s_goodorbad number;
v_sample_id varchar2(11);
v_seq varchar2(2);
v_num number;
--myexception exception;
v_s_id varchar2(12);