MySQL and MariaDB % Temp Tables on Disk Health Check


Use the % Temp Tables on Disk health check in Mini DBA to review MySQL and MariaDB configuration, metadata, and monitoring signals before they become active alerts.

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Health Check Summary

  • Platform: MySQL and MariaDB
  • Health check category: QueryPlans

What This Health Check Means

This health check tests a specific MySQL and MariaDB condition that Mini DBA can assess from configuration, metadata, or recent monitoring data.

Why It Matters

The check turns an operational best practice into a repeatable Mini DBA review item so teams do not rely on memory or occasional manual audits.

What To Do If It Fails

Open the failed check in Mini DBA, identify the affected object or setting, confirm whether it is intentional, then correct the configuration or record an approved exception.

Review Workflow

  1. Open the health check result and identify the object, setting, or metric named by the failed check.
  2. Decide whether the condition is intentional, inherited from a legacy system, or caused by recent change.
  3. Validate the fix in a lower environment or during a safe maintenance window when the change can affect plans, storage, or access.
  4. Rerun or refresh the health check after remediation so the Mini DBA health view reflects the new state.

Evidence To Collect

Keep a short note explaining why the check failed, what was changed, who owns the follow-up, and whether an exception was approved.

How To Prioritize It

Treat a failure as high priority on production systems because it can affect recoverability, availability, or security posture.

Prevention And Ownership

Prevent repeat failures by assigning an owner, documenting the expected configuration, and reviewing the check after upgrades, migrations, or major application releases.

Runbook Use

Add this page to the operational runbook for MySQL and MariaDB environments where the check repeatedly fails. Record local thresholds, approved exceptions, escalation contacts, and the expected review interval so the next administrator can act quickly without rediscovering the same context.

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