Oracle Database 19c: ASM Administration Workshop — Lesson 4: Monitoring, Diagnostics, Metadata Backup, Recovery, and Operations

Learning Objectives

• Explain the architecture, workflow, or business purpose behind ASM views, asmcmd, alerts, logs, metrics, and disk state.
• Apply mount failures, discovery, permissions, path, and redundancy incidents and metadata backup and restore awareness, disk header caution, and recovery planning in a controlled scenario.
• Validate outcomes and troubleshoot risks involving patch coordination, capacity thresholds, runbooks, escalation, and handoff.

Detailed Topics

• ASM views, asmcmd, alerts, logs, metrics, and disk state
• mount failures, discovery, permissions, path, and redundancy incidents
• metadata backup and restore awareness, disk header caution, and recovery planning
• patch coordination, capacity thresholds, runbooks, escalation, and handoff

Instructor Demonstration

Demonstrate ASM views, asmcmd, alerts, logs, metrics, and disk state within an ASM storage estate expanded and rebalanced while protecting redundancy, performance, and database availability, 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 mount failures, discovery, permissions, path, and redundancy incidents and metadata backup and restore awareness, disk header caution, and recovery planning, then introduce and resolve an exception involving patch coordination, capacity thresholds, runbooks, escalation, and handoff 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 ASM views, asmcmd, alerts, logs, metrics, and disk state, mount failures, discovery, permissions, path, and redundancy incidents, metadata backup and restore awareness, disk header caution, and recovery planning, patch coordination, capacity thresholds, runbooks, escalation, and handoff 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 Monitoring, Diagnostics, Metadata Backup, Recovery, and Operations in a realistic Oracle Database 19c: ASM Administration Workshop scenario and validate the result with documented evidence.