Minecraft

How to Reduce Minecraft Server RAM Using Java J9

Minecraft·March 22, 2026·3 min read

OpenJ9 is an alternative Java Virtual Machine developed by Eclipse that can significantly reduce memory usage compared to the standard HotSpot JVM. This is especially useful for Minecraft servers running on limited RAM plans.

BENEFITS OF J9Up to 50% lower memory usage compared to HotSpot

Faster startup times"Java17 j9".

4. Go back to the console again and start your server so the changes take effect.IMPORTANT NOTESNot all mods and plugins are fully compatible with OpenJ9.Performance may vary depending on your specific use case.We recommend testing thoroughly before using it in production.

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