Srerequisits X64 and oracle x64 installation.

Hello,
I want to make an installation of oracle 11g_x64 on a opensuse 11.2_x64, but the prerequisits test ask me some troubles, and I would like informations about that:

  1. Is it possible to simultaneously use two versions of the same package ?
    Ex: unixODBC in i386 and x64
  2. For some packages the indication of the version is not mentioned. Witch version file should I install i386 or i486 or …x64 ?
  3. Some packages need files from other packages, older than some recent :Pwitch are yet installed.
    Ex: upd message " Nothing provides tzdata >= 2003a, witch is required by glicb-…" while a tzdata 2009u is installed.

If you have some informations about prerequisits installations thanks. And if you know someone who could help me, thanks a lot.