> Hi, > > I've been contacted by a local training center specialized in Oracle > databases, to train a group of four administrators to use Linux. They're > supposed to use Oracle Linux (more exactly "OL5"), which I understand is > some specialized version of Red Hat Enterprise Linux. I think they offer you a choice of kernels. Their own kernel has performance enhancements. It's also supposed to be cheaper in maintenance than RHEL. But AFAIK, it's a re-engineering of RHEL in the same way CentOS is. Just with commercial support (and geared towards running Oracle stuff). I just looked and at the most basic level (patches only) it costs 94€/year/system. Does anybody know how fast they implement the fixes from upstream? Rainer