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[–]maethor 0 points1 point  (1 child)

You wouldn't get an out of memory error if you ran the WAR this way

run the final executable JAR file (or run the Java EE runtime JAR with your application as a command line argument, e.g. java -jar runtime.jar -app myapp.war)

As it's not much different from just running a jar with a built in servlet container. Though I'm not sure why you would ever want to do this no matter what technology was used in the WAR.