Audit table oracle10g

Hi
I have
audit_trail string TRUE in init.ora
then I run audit all or audit table in slqplus
Audit succeeded.
Now I create table abc using user alexz
drop table and create it again/
insert into abc a values (1);
select obj_name,action_name,username from dba_audit_trail where obj_name='ABC';

OBJ_NAME ACTION_NAME USERNAME
-------------------- ---------------------------- ------------------------------
ABC DROP TABLE ALEXZ
ABC CREATE TABLE ALEXZ

Where is the trace for insert ?
Thanks