Chapter 15
Using High-Availability Options
In This Chapter
Using Real Application Clusters (RAC)
Understanding Data Guard
A high-availability architecture combines hardware and software solutions to help reduce the impact of outages during planned and unplanned downtime. Your data’s availability is of utmost importance. However, the level of availability varies by business. Some can deal with a little downtime here and there with minor business interruptions. A minute of downtime for others can cost tens of thousands of dollars. Luckily, Oracle helps you harden against the forces out there that want to make your database unavailable. Hardening your database means protecting it against unplanned downtime. Unplanned downtime can be caused by hardware failure or events like fires, floods, user errors, etc.
Implementing a high-availability architecture may not be cost effective for everyone. It can be expensive in terms of hardware and software licenses. However, if downtime costs you thousands of dollars in short intervals, look at some of Oracle’s high-availability options.
This chapter is about a couple of Oracle features that you can configure for high availability. Each feature ...
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