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  • Book Overview & Buying Oracle Goldengate 12c Implementers Guide
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Oracle Goldengate 12c Implementers Guide

Oracle Goldengate 12c Implementers Guide

By : John P Jeffries
4.4 (10)
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Oracle Goldengate 12c Implementers Guide

Oracle Goldengate 12c Implementers Guide

4.4 (10)
By: John P Jeffries
Buy this Book

Overview of this book

The book is aimed at Oracle database administrators, project managers, and solution architects who wish to extend their knowledge of GoldenGate. The reader is assumed to be familiar with Oracle databases. No knowledge of GoldenGate is required.
Table of Contents (16 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started
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1. Getting Started
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What is GoldenGate?
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Oracle GoldenGate evolution
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Oracle GoldenGate solutions
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Oracle GoldenGate technology overview
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Oracle GoldenGate architecture
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12c new features
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Supported platforms and databases
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Oracle GoldenGate topology
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Design considerations
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What to replicate?
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Summary
2
2. Installing and Preparing GoldenGate
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2. Installing and Preparing GoldenGate
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Prerequisites
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The Oracle virtual machine
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The software installation
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Preparing the environment
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Creating the initial configuration
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Patching the GoldenGate home
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GoldenGate deinstallation from Linux/Unix
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Summary
3
3. Design Considerations
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3. Design Considerations
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Replication methods
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Networking
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Non-functional requirements
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Hardware considerations
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Changed data management
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Changed data recovery
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Summary
4
4. Configuring Oracle GoldenGate
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4. Configuring Oracle GoldenGate
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GoldenGate parameters
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The GoldenGate instantiation
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Performing the initial load
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Configuring change data capture
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Configuring change delivery
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Testing change data capture and delivery
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Stopping GoldenGate processes
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More about trail files
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Configuring Oracle Manager process
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Configuring the downstream mining database
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Summary
5
5. Configuration Options
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5. Configuration Options
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Using BATCHSQL
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Data compression
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Security features
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Event-based processing
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Bidirectional configuration options
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The DDL support
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Heterogeneous environments
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Oracle Streams to GoldenGate Migration
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Summary
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6. Configuring GoldenGate for HA
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6. Configuring GoldenGate for HA
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GoldenGate on RAC
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GoldenGate on Exadata
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Failover
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7. Advanced Configuration
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7. Advanced Configuration
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Mapping your data
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Data selection and filtering
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Data transformation
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DDL support
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The SQLEXEC parameter
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Using and defining macros
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User tokens
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User exits
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Using logic in the data replication
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Replicating data between different GoldenGate versions
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Licensing
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Oracle Data Integrator 12c
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Summary
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8. Managing Oracle GoldenGate
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8. Managing Oracle GoldenGate
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The Oracle Management Pack for GoldenGate
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Command-level security
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Managing the trail file
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Managing the process startup
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Managing TCP/IP errors
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Reporting and statistics
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Summary
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9. Performance Tuning
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9. Performance Tuning
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Before tuning GoldenGate
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Tuning data delivery
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Viewing integrated parameters
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Controlling the memory consumption
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Tracing processes to find wait events
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Diagnosing a slow Extract
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Static data dictionary views
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Tuning the network
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Hardware upgrades
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Summary
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10. Troubleshooting GoldenGate
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10. Troubleshooting GoldenGate
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Troubleshooting tips
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GoldenGate health check
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The GoldenGate dynamic performance views
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Investigating network issues
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Investigating Oracle errors
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Exception handling
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Handling Oracle Sequences
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Using LOGDUMP
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Upgrading GoldenGate
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Dynamic Rollback
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Summary
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11. The Future of GoldenGate
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11. The Future of GoldenGate
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Cloud computing
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GoldenGate and Big Data
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Deprecation of the nonCDB architecture
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Oracle GoldenGate 12c Release 2
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Summary
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A. GGSCI Commands
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A. GGSCI Commands
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B. GoldenGate Installed Components
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B. GoldenGate Installed Components
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C. Acronyms
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C. Acronyms
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Index
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Index

More about trail files

Trail files are used by Extract and Replicat processes; their primary role is for data persistence. You could argue that writing files to what could be deemed as a staging area is wasteful and suboptimal. Having said that, GoldenGate writes only the committed transactions to trail files in large blocks minimizing I/O. Furthermore, the architecture provides a guaranteed no data loss solution that is not to be underestimated.

The trail

By default, trail files are in the canonical format being unstructured, but with a header record. They are stored in the ./dirdat subdirectory under the GoldenGate Home. Each record contains the changed data and is of a variable record length. A trail can contain numerous trail files, each having a two-character prefix with a six-digit sequence number suffix.

An Extract process can write data to many trails. A Replicat can process data from only one trail. In classic mode, it is possible to configure multiple Replicat processes to handle...

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