On Exadata, You will have flashdisks. Idea to use them: A. Make them for Exadata Smart Flashcache B. Use them for Grid Disk for ASM Disk Group, and store some database files. C. Use both A and B in Database System I just curious, What should I concern, if use Flash Disks to be Grid Disks. What is you idea to use Flashdisk? However, Database System supports both OLTP and DSS. Thank You Surachart Opun Oracle ACE, Contributor (Oracle User Group in Thailand) http://surachartopun.com skye: surachart_op