Oracle 10g problem with trigger

this is my first attempt with Oracle I would like use foreign key.

First I create some table, with autoincrement ID:

create table kruzky_tab(
  kruzokid number primary key  not null,
  meno  varchar2(50) not null,
  pocet number not null
)

create sequence kruzky_tab_seq 
  start with 1 
  increment by 1 
  nomaxvalue; 

create trigger kruzky_tab_trigger
  before insert on kruzky_tab
  for each row
    begin
      select kruzky_tab_seq.nextval into :new.kruzokid from dual;
   开发者_JAVA百科 end;

Then I create second table with foreign key on table above:

create table studenti_tab(
  studentid number primary key not null,
  meno varchar2(50) not null,
  priezvisko varchar2(50) not null,
  email varchar2(50) not null,
  kruzokid references kruzky_tab
)

I try create same autoincrement trigger for studentid:

create sequence stundenti_tab_seq
  start with 1
  increment by 1
  nomaxvalue

create trigger studenti_tab_trigger
  before insert on studenti_tab
  for each row
    begin
      select studenti_tab_seq.nextval into :new.studnetid from dual;
    end;

I get this error:

ERROR at line 2: PLS-00049: bad bind variable 'NEW.STUDNETID'

1. create trigger `studenti_tab_trigger`
2. before insert on `studenti_tab`
3. for each row
4. begin

Trigger has same logic as trigger in kruzky_tab table on the top. What is bad? Thanks.

Make sure to rule out all typos of the identifier names, it looks as if you have some wrong characters in your identifiers:

create sequence stundenti_tab_seq (a "n" too much)

select studenti_tab_seq.nextval into :new.studnetid from dual; (sequence name does not match, new.studnetidis wrong)