Hi, it is an interesting topic. I did a select count from dba_tables and dba_all_tables. There are four tables are not in dba_tables. They are :
TABLE_NAME
------------------------------
KOTTD$
KOTTB$
KOTAD$
KOTMD$

What are they?
Another question is when I do select count on those two tables(or views), they are significantly slow. Why is that? Is it normal? Is it possible to make it faster?
Thanks.

Dragon