Oracle SOA suite 11g installation issue

Weblogic JVM not starting due to defualt memory setup issue, use following env parameters
On Linux
setenv EXTRA_JAVA_PROPERTIES "-Xms512m -Xmx512m"

On Windows
set EXTRA_JAVA_PROPERTIES="-Xms512m -Xmx512m"

got from the link
http://itknowledgeexchange.techtarget.com/itanswers/vm-could-not-reserve-enough-space-for-object-heap-from-oracle-jdeveloper11g/