how can I install Oracle Database Configuration Assistant (DBCA) with
Oracle Express?
I've already installed Oracle XE Server and client and the Developer
suite, but i can't find DBCA!

Production instance PROD is linked to another, PROD2, via a datalink. If I
wish to view data in PROD2 I currently have to do it the hard way and use
the SQL Editor window. Is there a way one can view tables in PROD2 using the
TOAD's Schema Browser while logged in as PROD?

These are the requirements currently open.
Req. ID:        Req-030420081050 - Oracle Technical Consultant
Primary Skills:     Oracle Techno functional -Incentive compensation is
MUST

I'm planning to use oracle XE in a web application.
Are there any known licence limitation for commercial apllications?
I already know this:
"Oracle Database XE can be installed on any size host machine with any

create or replace trigger trg_i_au_clients
    before insert on au_clients for each row
    begin
        select au_clients_seq.nextval into :new.id from dual;