The use of Oracle Streams Replication has become more and more common, replacing the more cumbersome Multimaster Advanced Replication. Many shops use Stream Replication to off load reporting and high impact loads from production databases. Based on my experience, more than half of the shops have the destination database in the same rack as the source database. With both databases located in close proximity, many shops are also implementing physical standbys of one or both of the replicated databases in a remote location. Oracle Streams and Dataguard Physical Standby database integrate easily, once you understand how the two technologies fit together.
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