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CHAPTER
14
Zero-Downtime Upgrades and Migrations Using Oracle GoldenGate
As the application requirements for database management keep getting more and more complex, the availability requirements also keep increasing, thereby shrinking the maintenance window. It is almost impossible to obtain downtime these days for performing routine maintenance activities on a database. Major upgrades like database versions from 10g to 11g will need a significant amount of downtime for successful accomplishment of intended upgrades that are subject to stringent user acceptance requirements. A typical database upgrade project will need an enormous amount of planning, ...

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