Oracle Golden Gate
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GoldenGate is a replication utility that provides flexible data propagation between databases. It consists of extract, replicat, and data pump processes that access trail files containing change data. An extract process mines source database redo logs and writes changes to trail files. A replicat process reads from trail files and applies changes to target database tables. The demo will show two scenarios for replicating data from a Windows source database to a Linux target database using different GoldenGate configuration methods.
Oracle Golden Gate
- 1. 1 An Overview of GoldenGate Replication Muhammad Qasim ORACLE
- 2. 2 OUTLINE Introduction Overview of GoldenGate Overview of the DEMO DEMO Scenarios
- 4. 4 GoldenGate Introduction The GoldenGate replication utility provides flexible and powerful framework, for automatic propagation of data changes This presentation will provide an overview of GoldenGate replication; and it will display some examples of actually using GoldenGate. In order to provide examples of using GoldenGate, a DEMO environment, which uses GoldenGate, has been set up.
- 5. 5 Overview of GoldenGate Replication 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.
- 6. Overview of the DEMO 6 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.
- 7. 7 Scenario 1: One-to-One Configuration using Direct Load Method In this configuration, one Extract group sends captured data over TCP/IP to a trail on the target system, where it is stored until processed by one Replicat group. Scenario 2: One-to-One Configuration using File to Replicate This method uses an Extract process to extract source data into flat files or trails on the target system. The initial load Replicat task then moves the data from the intermediate file to the target database. Demonstration Scenarios
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