I recently discovered that Citrix has opensourced XenServer, and that XCP (which we have been using) is more or less now legacy and needless.
While looking at rebuilding our systems on XenServer 6.2, I have just realized that oracle VM is actually built atop Xen too, but has so much more going for it in terms of application level integration/configuration and ready templates for practically all of Oracle's enterprise applications. Now, this is most attractive and I am swayed to go with it.
My only concern at this point is whether Oracle VM allows the xen xe commands for CLI administration. I will eventually work this out, but I am in a hurry to rig up the systems, and so I am asking in the hope that someone can save me sometime in researching this for myself.