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After installing JBOSS EAP 5.1.1 on my Linux Server, I am getting following error when I run JBOSS with command run.sh

JBoss Bootstrap Environment

JBOSS_HOME: /usr/lib/jboss-eap-5.1/jboss-as

JAVA: java

JAVA_OPTS: -Dprogram.name=run.sh -server -Xms1303m -Xmx1303m -XX:MaxPermSize=256m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Dsun.lang.ClassLoader.allowArraySyntax=true -Djava.net.preferIPv4Stack=true

CLASSPATH: /usr/lib/jboss-eap-5.1/jboss-as/bin/run.jar


Error occurred during initialization of VM Could not reserve enough space for object heap

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Is this a virtual Linux server? –  Kenny Rasschaert Jan 24 '12 at 6:36

1 Answer 1


The error seems to be saying that the virtual memory size of the machine is smaller than the maximum heap size we are defining via Xms1303m -Xmx1303m. I have changed it to -Xms256m -Xmx512m and it started working in my local Windows box.

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