mcclnx mcc wrote: > we plan to setup our ORACLE database server (32 bits DB) and use dell r900 > server. This server can put up to 128GB RAM. > > We are thinking use 32 bits CENTOS 4.7 or 5.2. My concern about CENTOS 5.2 > is it only support up to 16 GB RAM on 32 bits O.S. > > Any suggestion? I would not use CentOS at all if for anything else than Oracle won't support it. Oracle linux is a clone of RHEL and I believe is pretty cheap, otherwise RHEL 5 Advanced. Even Oracle SE One seems to be roughly $5800 for a license. It's crazy to try to save a couple hundred bucks a month for something as important as an Oracle database. Also for sure go 64-bit if your going with an R900. I'd be surprised if Oracle even had a 32-bit version anymore. Oracle SE(not SE One) is a great value compared to Oracle EE, I used both at my last company and SE was certainly a better product for the money. Though I did miss being able to use EM. Oracle EE only for those who have bottomless pockets. Unless your using a really old version of Oracle for some reason, otherwise I assume your using at least 10Gr2 or 11G. nate