Chapter 13. Zero-Downtime Migration Replication

Many IT organizations today are trapped for too long with old releases of software and old database hardware platforms because they can't tolerate the downtime involved with migrating to new software releases and hardware platforms. Even planned database outages for busy online websites can result in lost revenue and make customers angry. Oracle GoldenGate can help with these challenges by providing a way to implement the new, upgraded database platform ahead of time and have it ready and waiting for the application to cutover. The only downtime needed is the time for the application to cutover and reconnect to the new target database. Also, by replicating from the new upgraded target back to the ...

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