Matt, Brad, Group, Another Bite.
My opinion on RAC (after limited nr of trials), I did read Mogens and loads of other articles, ppts etc... The arguments in favour of RAC are : - Scalability (scale out, rather then forklift) - flexibility (capacity on demand, increase and Decrease) - redundancy (failover, TAF, within limits) - TCO (I'm assuming Lintel here) The args against are : - Constraints on code and app (interconnect !) - complexity of admin - license cost (paper problem, but real for many of cstmrs) To make the most of RAC: know the pros and cons, exploit the pros and mitigate the cons (duh!). Note that I list 4 pros and only 3 cons ;-) Suggestions: - examine data and applications behaviour (RAC deployment guide) - know your hardware (interconnect and shared storage) - use identical components (notably: servers) - implement flexible admin: must buy into clusters/grid! - implement a fast-cloning-strategy for servers (and software). - use a CFS (OCFS is a good start, but only just, hire an ex DEC-VMS operator to tell you about clusters) - resist temptation to use a single node/server for >1 purpose. - .. and then some.... In the end, I will team up with the in-favour-of-RAC side, but I will look at each situation separately. Many IT ops are simply not ready to make the transition to clusters/grid yet. Hint: re-vamping OFA to suit RAC (on a CFS only) may help. Regards, PdV Oracle DBA -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Piet de Visser INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
