Ensure you have at least 16 unused ports available for various server services (default admin port is 4848). Quick Installation Guide 1 Installing Eclipse GlassFish Server 5.1

Specialized JAR files like glassfish-embedded-web.jar and glassfish-embedded-all.jar are available for deploying applications within a single process.

For developers using build tools, implementation components are available under the org.glassfish coordinates, while API jars use the jakarta.* coordinates at the Maven Central Repository . Key Features & Changes in 5.1

The old "Update Tool" and pkg command have been removed from the server. System Requirements

Find all distribution packages on the EE4J GlassFish Project Page .

Java DB has been officially replaced by Apache Derby in this release.