Minecraft Java server memory & startup arguments

Overview

Understand heap sizing and startup arguments before generating a command. This guide is intentionally focused on the workflow rather than assuming a particular hosting provider.

Before you change anything

• Keep a backup of the current configuration.
• Change one group of settings at a time when troubleshooting.
• Restart the server when the setting requires a restart.
• Check the server console/logs after changes.

Use MCTools

Use the relevant MCTools utility to prepare or inspect the data, then verify the result in your server environment.