Oracle GoldenGate 12c: Advanced Configuration for Oracle Ed 1 — Lesson 4: Performance Tuning and Complex Troubleshooting

Technical Scope

• capture and apply statistics, lag decomposition, throughput, and transaction profiles
• batching, parallel apply, memory, I/O, network, trail, and database bottlenecks
• long transactions, missing logs, trail corruption, mapping errors, and data divergence
• controlled tuning experiment, before-and-after evidence, recovery, and prevention

Instructor Demonstration

The instructor will troubleshoot and harden capture and apply statistics, lag decomposition, throughput, and transaction profiles in the context of a multi-database replication estate requiring scalable apply, selective routing, planned failover, and zero-guesswork recovery. The demonstration captures commands, configuration, transactions, output, logs, plans, or screenshots that prove both the intended behavior and the control boundary.

Applied Workshop

Learners complete a controlled exercise covering batching, parallel apply, memory, I/O, network, trail, and database bottlenecks and long transactions, missing logs, trail corruption, mapping errors, and data divergence, then introduce a realistic exception involving controlled tuning experiment, before-and-after evidence, recovery, and prevention. They record assumptions, exact steps, expected and observed results, a reversible correction, and the evidence required for operational acceptance.

1. Confirm scope, identities, data, dependencies, controls, and expected result.
2. Perform the product-specific configuration, development, analysis, or business-process task.
3. Capture reproducible technical or transaction evidence and compare it with the expected value.
4. Explain the operational, security, performance, data-quality, or business trade-off.

Validation Standard

Acceptance for Performance Tuning and Complex Troubleshooting requires the result to be reproducible, traceable to approved inputs, consistent with the relevant Oracle or platform behavior, and supported by checks for security, data integrity, reliability, performance, and recoverability.

• The intended target, scope, and ownership are verified.
• Expected-value and negative-path checks pass.
• Security, reliability, performance, data quality, and support impacts are reviewed.
• Unexpected behavior is resolved before acceptance.

Failure Analysis

When the result differs from expectation, learners isolate the smallest proven cause across capture and apply statistics, lag decomposition, throughput, and transaction profiles, batching, parallel apply, memory, I/O, network, trail, and database bottlenecks, long transactions, missing logs, trail corruption, mapping errors, and data divergence; they avoid speculative production changes, preserve evidence, apply the lowest-risk correction, rerun the test, and document prevention.

Practical Outcome

Complete and defend a validated result for Performance Tuning and Complex Troubleshooting with a reusable implementation record or runbook.