Oracle Database 19c: Performance Management and Tuning — Lesson 4: SQL Tuning, Plans, Advisors, Change Control, and Capacity Improvement

Learning Objectives

• Explain the architecture, workflow, or business purpose behind execution plans, cardinality, join methods, and access paths.
• Apply statistics, indexes, SQL rewrites, and bind behavior and SQL Tuning Advisor, SQL profiles, and plan management awareness in a controlled scenario.
• Validate outcomes and troubleshoot risks involving load validation, rollback criteria, monitoring thresholds, and capacity roadmap.

Detailed Topics

• execution plans, cardinality, join methods, and access paths
• statistics, indexes, SQL rewrites, and bind behavior
• SQL Tuning Advisor, SQL profiles, and plan management awareness
• load validation, rollback criteria, monitoring thresholds, and capacity roadmap

Instructor Demonstration

Demonstrate execution plans, cardinality, join methods, and access paths within an order-processing workload whose response time degrades during peak volume and requires evidence-led diagnosis, then capture the exact configuration, command, transaction, report, model, query, code, or process evidence that proves the result for lesson 4.

Hands-On Exercise

Implement a controlled exercise covering statistics, indexes, SQL rewrites, and bind behavior and SQL Tuning Advisor, SQL profiles, and plan management awareness, then introduce and resolve an exception involving load validation, rollback criteria, monitoring thresholds, and capacity roadmap while preserving before-and-after evidence.

1. Confirm the environment, identities, inputs, dependencies, risks, and expected outcome.
2. Complete the course-specific configuration, development, analysis, or process workflow.
3. Capture settings, commands, data, outputs, logs, reports, screenshots, calculations, or test results.
4. Compare the observed result with acceptance criteria and document corrective action.

Scenario Analysis

• Identify the technical or business decision that must be made.
• Compare valid approaches and their security, performance, reliability, cost, compliance, and support trade-offs.
• Define rollback, recovery, ownership, communication, and evidence requirements.

Troubleshooting Guidance

Diagnose issues across execution plans, cardinality, join methods, and access paths, statistics, indexes, SQL rewrites, and bind behavior, SQL Tuning Advisor, SQL profiles, and plan management awareness, load validation, rollback criteria, monitoring thresholds, and capacity roadmap without making an unverified production change. Separate symptoms from causes, gather evidence, test the smallest reversible correction, rerun validation, and record preventive action.

Validation Checklist

• The requirement, scope, inputs, dependencies, and expected result are documented.
• The result is reproducible and supported by course-specific evidence.
• Normal, boundary, failure, security, performance, and operational conditions are reviewed.
• Exceptions, rollback, ownership, and the next improvement priority are recorded.

Lesson Outcome

Learners can apply SQL Tuning, Plans, Advisors, Change Control, and Capacity Improvement in a realistic Oracle Database 19c: Performance Management and Tuning scenario and validate the result with documented evidence.