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Oracle10g Grid Computing with RAC
Chapter 17 -
Oracle’s Grid Integration Technologies

Oracle Streams 

Oracle Streams is an enabling technology for data sharing. Data sharing among the different databases and among different application environments is a very common practice. A variety of measures, such as data replication, data loading, data movement to heterogeneous database environments and message routing, involve some sort of data sharing. Even building the summarized data, such as data warehousing, is another form of data sharing.

Oracle Streams is a method to control and conduct the data flow. It is a vital component in maintaining the Grid Framework.

Typically, the changes in a database are captured by the Capture Process, and are then routed or propagated to a destination database. At the destination database, the Apply Process applies the changes. The method of streams can also create or capture events and then stage and send the events to different destinations. Figure 17.3 shows a typical data flow.

Figure 17.3 Streams Data Flow

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