Oracle WebLogic Server 14c: Troubleshooting Workshop — Lesson 1: Troubleshooting Methodology, Logs, WLST, Diagnostics, and Evidence Collection

Learning Objectives

• Explain the purpose and operating context of symptom definition, scope, timeline, recent change, and reproduction.
• Apply server, access, application, Node Manager, and diagnostic logs and WLST, console, REST awareness, thread dumps, heap evidence, and JFR awareness in a controlled environment.
• Validate outcomes and troubleshoot risks involving configuration archives, support bundles, hypotheses, and incident records.

Detailed Topics

• symptom definition, scope, timeline, recent change, and reproduction
• server, access, application, Node Manager, and diagnostic logs
• WLST, console, REST awareness, thread dumps, heap evidence, and JFR awareness
• configuration archives, support bundles, hypotheses, and incident records

Instructor Demonstration

Demonstrate symptom definition, scope, timeline, recent change, and reproduction for a WebLogic domain investigated through four production incidents with overlapping symptoms; capture the exact configuration, code, command, transaction, query, dashboard, model, schedule, or report evidence that proves the expected result.

Hands-On Exercise

Complete a controlled Oracle WebLogic Server 14c: Troubleshooting Workshop exercise covering server, access, application, Node Manager, and diagnostic logs and WLST, console, REST awareness, thread dumps, heap evidence, and JFR awareness; introduce an exception involving configuration archives, support bundles, hypotheses, and incident records, diagnose it from evidence, apply the smallest reversible correction, and rerun acceptance checks.

1. Confirm scope, prerequisites, identities, dependencies, data, risks, and expected outcome.
2. Perform the course-specific configuration, development, administration, analysis, or business-process workflow.
3. Capture commands, settings, records, logs, screenshots, reports, metrics, or test results.
4. Compare the observed result with acceptance criteria and document corrective or preventive action.

Scenario Analysis

• Identify the technical or business decision and the stakeholders affected by it.
• Compare security, performance, reliability, compliance, cost, usability, and support trade-offs.
• Define rollback, recovery, communication, evidence, ownership, and escalation requirements.

Troubleshooting Guidance

Diagnose issues involving symptom definition, scope, timeline, recent change, and reproduction, server, access, application, Node Manager, and diagnostic logs, WLST, console, REST awareness, thread dumps, heap evidence, and JFR awareness, configuration archives, support bundles, hypotheses, and incident records without making an unverified production change. Separate symptoms from causes, gather time-correlated evidence, test a reversible hypothesis, validate the correction, and record recurrence controls.

Validation Checklist

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

Lesson Outcome

Learners can apply Troubleshooting Methodology, Logs, WLST, Diagnostics, and Evidence Collection in a realistic Oracle WebLogic Server 14c: Troubleshooting Workshop scenario and defend the result with documented evidence.