High CPU load on 1 node

While not in production yet, I have a high CPU load on one node, mainly caused by java processes:
oracle   18349 42.2  0.1 1185392 315252 ?      Sl   Jan24 1893:04 /u01/app/oracle/product/11.2.0.4/dbhome_1/jdk/bin/java -server -Xmx384M -XX:MaxPermSize=400M -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -DORACLE_HOME=/u01/app/oracle/product/11.2.0.4/dbhome_1 -Doracle.home=/u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j -Doracle.oc4j.localhome=/u01/app/oracle/product/11.2.0.4/dbhome_1/uxjetoda1-2_DWH1T/sysman -DEMSTATE=/u01/app/oracle/product/11.2.0.4/dbhome_1/uxjetoda1-2_DWH1T -Doracle.j2ee.dont.use.memory.archive=true -Djava.protocol.handler.pkgs=HTTPClient -Doracle.security.jazn.config=/u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/OC4J_DBConsole_uxjetoda1-2_DWH1T/config/jazn.xml -Djava.security.policy=/u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/OC4J_DBConsole_uxjetoda1-2_DWH1T/config/java2.policy -Djavax.net.ssl.KeyStore=/u01/app/oracle/product/11.2.0.4/dbhome_1/sysman/config/OCMTrustedCerts.txt-Djava.security.properties=/u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/home/config/jazn.security.props -DEMDROOT=/u01/app/oracle/product/11.2.0.4/dbhome_1/uxjetoda1-2_DWH1T -Dsysman.md5password=true -Drepapi.oracle.home=/u01/app/oracle/product/11.2.0.4/dbhome_1 -Ddisable.checkForUpdate=true -Doracle.sysman.ccr.ocmSDK.websvc.keystore=/u01/app/oracle/product/11.2.0.4/dbhome_1/jlib/emocmclnt.ks -Dice.pilots.html4.ignoreNonGenericFonts=true -Djava.awt.headless=true -jar /u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/home/oc4j.jar -config /u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/OC4J_DBConsole_uxjetoda1-2_DWH1T/config/server.xml