Hi Grzegorz, There is another option- use zones on Solaris. When choosing the ESX is still a problem with licenses, you need license for entire physical machine - if this is a problem for you:) Pozdrawiam / Regards, Paweł Smolarz W dniu 24.08.2011 17:58, Grzegorz Goryszewski pisze: Hi, finally got some pc trash working, which is Quad core 2 Q6600 , 8GB RAM, 2x 1TB 7200 64MB cache SATA2 Disks. Wondering which virtualization method to choose: 1. Oracle VM Pros: -Xen (bare metal virtualization) - templates - stick with Oracle - already downloaded templates :) Cons: - need additional pc for Oracle VM Manager 2. ESX Pros: - mature technology - popular one Cons: - need additional pc for ESX management (not an option with 1 pc) 3. Just some Linux disto with Oracle Vbox . Pros: -easy Cons: - dont see any other 4. Just some Linux disto with VMware -generaly same as Oracle VBOX My goal is to made - 2 node 10.2.0.X RAC - 2 node 11.2.0.X RAC - 11.2.0.X single with Logical/Physical Standby - 10.2.0.X single with Logical/Physical Standby of course not running this parallel :). And most important question , should I choose Solaris x86 as guest system because I've noticed all Oracle Hackers are using Solaris because of DTrace :) and mpstat Looks like DTrace is a must have when trying to go deep into internals is that right ? Regards GG ---------------------------------------------------------------- Kredyt dla nowych firm do 200 tys. zA'! Szukaj >> http://linkint.pl/f2a1f -- //www.freelists.org/webpage/oracle-l Nordea Bank Polska S.A. z siedzibą w Gdyni, ul. Kielecka 2, 81-303 Gdynia, wpisaną do Rejestru Przedsiębiorców Krajowego Rejestru Sądowego pod numerem: 0000021828, dla której dokumentację przechowuje Sąd Rejonowy Gdańsk - Północ w Gdańsku, VIII Wydział Gospodarczy Krajowego Rejestru Sądowego, o kapitale zakładowym i wpłaconym w wysokości: 277.493.500,00 złotych, NIP: 586-000-78-20, REGON: 190024711