Hi Nancy, I would recommend you to start your RAC tour with Oracle documentation. Apart from that, following books will also be helpful: Oracle Real Application Clusters by Mural Vallath Oracle Database 10g Real Application Clusters Handbook by Gopalakrishnan. Even Julian Dyke has authored a book on RAC, I haven't read that book but it seems to be a nice one also. Happy learning !! Regards Nancy Iles <nancy_iles@xxxxxxxxxxx> wrote: .hmmessage P { margin:0px; padding:0px } body.hmmessage { FONT-SIZE: 10pt; FONT-FAMILY:Tahoma } What books/classes would you recommend for someone taking on a RAC implementation and support of a company's key revenue system? I am a certified DBA and I have worked with Oracle Applications for several years but I have never worked in a RAC environment and would appreciate any tips on how to come up to speed on RAC and Data Guard quickly. Regards, Nancy Iles --------------------------------- Get news, entertainment and everything you care about at Live.com. Check it out! --------------------------------- Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.