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GoldenGate replication consists of three basic utilities: “extract”,”replicat” and “data pump”. In addition all three of these utilities access “trail files”, which are flat files that contain formatted GoldenGate data.
An extract group mines a database’s redo logs; and writes information about the changes it find into trail files. Extract is functionally similar to the Streams “capture” process.
A replicat group reads information from trail files; and then writes those changes into database tables. Replicat is functionally similar to the Streams “apply” process.
A data pump group copies information between trail files. Data is functionally similar to Streams “propagate” process.
Overview of the DEMO We have two 11g databases deployed in different environments. Source: Windows XP 32bit 11g release 2 Target: Linux x86 32bit 11g release 2 We will demonstrate two scenarios where data will be replicated from source to target.