JBOSS EAP 5.1.1 error after installation

Question

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

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