I agree with Mark you should do it on two machines if you have them In addition to Mark You learn how to load balance, set up different services on the machines, the VIP set up is different, etc. VMware is ok but it poses it's own challenges and a what you think maybe a Rac issue might be a vmware issue. my 2.5 cents worth. Kathy "Powell, Mark D" <mark.powell@xxxxxxx> wrote: Using earlier releases of OPS/RAC some individuals have actually managed to get two OPS instances running on the same Windows machine. I do not think the undertaking is worth the effort. I am not sure I would want to bother with VM either if the money for two cheap machines could be found or better yet if two existing machines could be claimed for the task. The only value in a single machine RAC system is as a study platform since the failure of the machine would affect both instances. -- Mark D Powell -- Phone (313) 592-5148 --------------------------------- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Frits Hoogland Sent: Thursday, February 07, 2008 9:03 AM To: nileshkum@xxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Implementation of RAC on single machine Using this installation guide: http://frits.homelinux.com/RAC11g_and_ASM_on_VMware.pdf You can install oracle RAC using two virtual machines with vmware server. frits On Feb 7, 2008 1:21 PM, nilesh kumar <nileshkum@xxxxxxxxx> wrote: Hello All, Good Morning! to every one hope every one is doing good. I have an question. Recently i have learned how to implement oracle 10g RAC on two machine and firewire as storing media. Is it possible to implement RAC on a single machine i dont have any idea regarding that. Waiting for your valuable suggestions. Thanks Nilesh -- Soni Temples & Softwares are more or less the same, first we build them and then we pray ;) --------------------------------- Never miss a thing. Make Yahoo your homepage.