Greetings, I am currently using windows server 2008 R2 for Oracle Database 11g. The operating system is using without running Oracle about 0.7 GO. I am wondering if switching to Oracle Linux / RHEL / Centos would be better, because my PC has only 2 GB RAM and a dual-core AMD CPU of 2.8. I need to make some tests which assume running a virtual machine along with Oracle DB 11g. So, I will have the 1 host operating system ( I need here a recommendation, which is lighter) 2 Oracle DB 11g Server 3 A virtual machine running some old OS just to connect to the database and run some queries It is advisable to switch form windows server to a Unix environment? Or, what OS do you think would suite my needs? Thank you in advance.