Oracle Enterprise Manager 9.2 comes with the database software. You must dowload Database Software then install Entrprise Manager.
Enterprise Manager Java Console comes with 9i Client software.
EM 12c which is available for download from OTN supports 9i databases,
so I think it would be easier to download and install it rather than OEM 9i
although possibly there are some specific features in OEM 9i which are not anymore in 12c.
and in regards TOAD usage, have you tried SQL Developer, it is free and Oracle recently issued SQL Dev 4