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Allocate more JVM memory

Magnolia 5.5.4 ee-bundle may require you to allocate more memory the Java Virtual Machine (JVM). If you see a java.lang.OutOfMemoryError in the startup log or the system stops responding during installation, increase the Java heap size. The default maximum heap size is 512M. Try a higher amount such as 1024M. We are working on uncovering the root cause for the increased memory need.

See: Java out of memory

Further reading

• https://vaadin.com/docs/framework/migration/migrating-to-vaadin8.html
• https://vaadin.com/blog/upgrading-to-vaadin-framework-8-part-1-of-2-
  https://vaadin.com/blog/upgrading-to-vaadin-framework-8-part-2-of-2-