Security, x$kzdos, x$kturd, Roles, Privileges, ...

Does anybody know where to find information about the way Oracle manages Roles inside, and in general, it´s security mechanisms (internal views like "x$kzdos", "x$kturd" (where are them created ? ), ..., control files, ...).
Sites in Internet with white papers, tutorials, distribution lists, ...???

I need to know the internal setup and management of Oracle Security System, (where and when creates internal tables, and views like "kzdos", "x$kturd").

It must be at a lower level than shown by Oracle Manuals

Thanks Received on Sat Jul 08 2000 - 00:00:00 CDT