To enable the console button in Oracle VM Manager, an additional rpm will need to be installed depending on which browser is used to access Oracle VM Manager. Please see this readme for more details. kernel-2.6.9-18.104.22.168.1.EL.i686.rpm
Guest Kernels and Modules
Kernels for Hardware Virtualized (HVM) guests are provided to reduce clock skew issues.
Paravirtualized drivers (xen-pvhvm packages) are provided to reduce system overhead in an HVM guest.
Paravirtualized kernels are provided to improve the stability of software running in a Paravirtualized (PV) guest.