Meet Kevin
If you want to know about clusters and RAC and such, Kevin Closson is the man.
He's a member of the OakTable, was one of the guys that designed the Sequent computer, ported Oracle for a lot of years, and is now chief architect at Polyserve.
He has one HELL of a website, where you can learn so much about the Oracle technology stack you wouldn't believe it. As a warm-up, try this:
http://kevinclosson.wordpress.com/2006/12/03/rac-expert-or-clusters-expert/
He's a member of the OakTable, was one of the guys that designed the Sequent computer, ported Oracle for a lot of years, and is now chief architect at Polyserve.
He has one HELL of a website, where you can learn so much about the Oracle technology stack you wouldn't believe it. As a warm-up, try this:
http://kevinclosson.wordpress.com/2006/12/03/rac-expert-or-clusters-expert/