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
