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Release It! by Michael T. Nygard

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The Outage

As was the case with most of my large clients, a local team of engineers dedicated to the account operated the airline’s infrastructure. In fact, that team had been doing most of the work for more than three years when this happened. On the night this started, the local engineers had executed a manual database failover from CF database 1 to CF database 2. (See Figure 1, CF Deployment Architecture.) They used Veritas to migrate the active database from one host to the other. This allowed them to do some routine maintenance to the first host. Totally routine. They had done this procedure dozens of times in the past.

Veritas Cluster Server orchestrates the failover. In the space of one minute, it can shut down the Oracle server on ...

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