orclz>
orclz> select * from dept where rowid='AAAWy5AAGAAAAC3AAA';

    DEPTNO DNAME          LOC
---------- -------------- -------------
        10 ACCOUNTING     NEW YORK

orclz> alter table dept move;

Table altered.

orclz> select * from dept where rowid='AAAWy5AAGAAAAC3AAA';
select * from dept where rowid='AAAWy5AAGAAAAC3AAA'
              *
ERROR at line 1:
ORA-01410: invalid ROWID


orclz>

orclz> select * from dept where rowid='AAAW3NAAGAAAAFbAAA';

    DEPTNO DNAME          LOC
---------- -------------- -------------
        10 ACCOUNTING     NEW YORK

orclz> alter table dept add (newcol varchar2(10));

Table altered.

orclz> update dept set newcol='idiot' where rowid='AAAW3NAAGAAAAFbAAA';

1 row updated.

orclz> select * from dept where rowid='AAAW3NAAGAAAAFbAAA';

    DEPTNO DNAME          LOC           NEWCOL
---------- -------------- ------------- ----------
        10 ACCOUNTING     NEW YORK      idiot

orclz>

orclz>
orclz> var rid varchar2(18)
orclz> insert into dept values(99,'new','uk') returning rowid into :rid;

1 row created.

orclz> select * from dept where rowid=:rid;

    DEPTNO DNAME          LOC
---------- -------------- -------------
        99 new            uk

orclz>