aix 怎么调节java虚拟机占用内存大小

ps -ef | grep java
    root 1376564 2818218   0   Aug 10      -  1:10 /var/opt/tivoli/ep/_jvm/jre/bin/java -Xmx384m -Xminf0.01 -Xmaxf0.4 -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Xbootclasspath/a:/var/opt/tivoli/ep/runtime/core/eclipse/plugins/com.ibm.rcp.base_6.2.1.20091117-1800/rcpbootcp.jar:/var/opt/tivoli/ep/lib/com.ibm.logging.icl_1.1.1.jar:/var/opt/tivoli/ep/lib/jaas2zos.jar:/var/opt/tivoli/ep/lib/jaasmodule.jar:/var/opt/tivoli/ep/lib/lwinative.jar:/var/opt/tivoli/ep/lib/lwinl.jar:/var/opt/tivoli/ep/lib/lwirolemap.jar:/var/opt/tivoli/ep/lib/lwisecurity.jar:/var/opt/tivoli/ep/lib/lwitools.jar:/var/opt/tivoli/ep/lib/passutils.jar:../../runtime/agent/lib/cas-bootcp.jar -Xverify:none -cp eclipse/launch.jar:eclipse/startup.jar:/var/opt/tivoli/ep/runtime/core/eclipse/plugins/com.ibm.rcp.base_6.2.1.20091117-1800/launcher.jar com.ibm.lwi.LaunchLWI


在哪里设置-xmx的大小呢？