One of the most important tasks in increasing the availability of any technology is choosing the correct method. There are often a number of ways to make the system immune to different types of failures. Choosing the correct type of system resilience ensures realistic availability times. One of the most common causes of failure is the breakdown of the actual hardware system on which the system is running. In order to overcome such a failure, the most common approach is to move the failed resources to another surviving available piece of kit. This is achieved, for example, using watchdog software, which monitors the state of the processes and triggers the failover in case the process dies. Also, when you are configuring Oracle GoldenGate in an Oracle RAC environment, you need to perform some additional steps to make it work with a cluster database. In this recipe, we will look into the overall process of how GoldenGate high availability works...