How to increase the Heap Size on Oracle SOA Servers to fix Java Out of Memory Exception

In the startManagedWeblogic script for the managed servers  $DOMAIN_HOME/bin/startManagedWebLogic.cmd
  
                        set JAVA_OPTIONS=-Xms1024m -Xmx1024m %JAVA_OPTIONS%


    In the setDomainEnv script for the managed servers and admin server (domain wide)

                       set USER_MEM_ARGS=-Xms1024m -Xmx1024m -XX:PermSize=256m