I am getting ready to listen to LARRY Ellison's talk on OLTP version of Exadata using SUN hardware. I see that this may be useful for mixed workload boxes. Larry had said last year while announcing Exadata in Sep '08, that 70% of the workload of OLTP's are for querying of data.
Oracle is claiming "The result is a quantum leap in performance over Oracle's previous generation Exadata machine, including a 20x increase in random I/O and a 5x I/O bandwidth speedup with FlashFire Technology, as well as a 2x speedup in compute and network performance capacity." Let us see how Larry is going to explain this.