How are duplicate parameters handled when starting WLS?

I was given some memory tuning suggestions for WLS and told to set them in $USER_MEM_ARGS. However, when I try to start the AdminServer I am getting an error "Invalid initial heap size: -Xms512m". This puzzles me because it looks like that was the original heap size. I am wondering if it is because the parameter appears twice.
So my question is, "If a parameter is used twice, is the first one used? the last one? or is it an error?"
Now to see if I can add an image. Guess not. Soooo... note -Xms=512m appears twice.
* To start WebLogic Server, use a username and *
* password assigned to an admin-level user. For *
* server administration, use the WebLogic Server *
* console at http://hostname:port/console *
RRP Debugging...
$SERVER_NAME: AdminServer
$JAVA_VENDOR: Sun
$USER_MEM_ARGS: -Xms=512m -Xmx=512m -Xns=128m -d64 -XgcPrio:throughput -XXnoSystemGC -Djava.security.egd=file:/dev/../dev/urandom -XX:PermSize=128m -XX:MaxPermSize=256m -XX:PermSize=128m -XX:MaxPermSize
starting weblogic with Java version:
java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)
Starting WLS with line:
/app/oracle/product/ofm/jdk1.6.0_25/bin/java -server -Xms=512m -Xmx=512m -Xns=128m -d64 -XgcPrio:throughput -XXnoSystemGC -Djava.security.egd=file:/dev/../dev/urandom -XX:PermSize=128m -XX:MaxPermSize=256m -XX:PermSize=128m -XX:MaxPermSize -Dweblogic.Name=AdminServer -Djava.security.policy=/app/oracle/product/ofm/wlserver_10.3/server/lib/weblogic.policy -Dweblogic.ProductionModeEnabled=true -da -Dplatform.home=/app/oracle/product/ofm/wlserver_10.3 -Dwls.home=/app/oracle/product/ofm/wlserver_10.3/server -Dweblogic.home=/app/oracle/product/ofm/wlserver_10.3/server -XX:PermSize=256m -XX:MaxPermSize=512m -Dcommon.components.home=/app/oracle/product/ofm/oracle_common -Djrf.version=11.1.1 -Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger -Ddomain.home=/app/oracle/product/ofm/user_projects/domains/IDMDomain -Djrockit.optfile=/app/oracle/product/ofm/oracle_common/modules/oracle.jrf_11.1.1/jrocket_optfile.txt -Doracle.server.config.dir=/app/oracle/product/ofm/user_projects/domains/IDMDomain/config/fmwconfig/servers/AdminServer -Doracle.domain.config.dir=/app/oracle/product/ofm/user_projects/domains/IDMDomain/config/fmwconfig -Digf.arisidbeans.carmlloc=/app/oracle/product/ofm/user_projects/domains/IDMDomain/config/fmwconfig/carml -Digf.arisidstack.home=/app/oracle/product/ofm/user_projects/domains/IDMDomain/config/fmwconfig/arisidprovider -Doracle.security.jps.config=/app/oracle/product/ofm/user_projects/domains/IDMDomain/config/fmwconfig/jps-config.xml -Doracle.deployed.app.dir=/app/oracle/product/ofm/user_projects/domains/IDMDomain/servers/AdminServer/tmp/_WL_user -Doracle.deployed.app.ext=/- -Dweblogic.alternateTypesDirectory=/app/oracle/product/ofm/oracle_common/modules/oracle.ossoiap_11.1.1,/app/oracle/product/ofm/oracle_common/modules/oracle.oamprovider_11.1.1 -Djava.protocol.handler.pkgs=oracle.mds.net.protocol -Dweblogic.jdbc.remoteEnabled=false -Dem.oracle.home=/app/oracle/product/ofm/oracle_common -Djava.awt.headless=true -Didm.oracle.home=/app/oracle/product/ofm/Oracle_IDM1 -Xms512m -Xmx1024m -Xss512K -Djava.net.preferIPv6Addresses=true -DuseIPv6Address=true -Djava.protocol.handler.pkgs=oracle.mds.net.protocol -Dweblogic.management.discover=false -Djava.net.preferIPv6Addresses=true -Dweblogic.management.discover=true -Dwlw.iterativeDev=false -Dwlw.testConsole=false -Dwlw.logErrorsToConsole=false -Dweblogic.ext.dirs=/app/oracle/product/ofm/patch_wls1035/profiles/default/sysext_manifest_classpath:/app/oracle/product/ofm/patch_ocp360/profiles/default/sysext_manifest_classpath weblogic.Server
Invalid initial heap size: -Xms=512m
Could not create the Java virtual machine.
Edited by: rrp on Oct 26, 2011 10:38 AM

I just noticed that in one place it is -Xms=512m and in the other it is -Xms512m. But the example I was given works - but apparently with JRocket, not sun. Does the format of this parameter vary between Hotspot and JRocket??? But the question on duplicate parameters remains.
Edited by: rrp on Oct 26, 2011 10:50 AM

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[http://imageshack.us/photo/my-images/840/catturazz.jpg/ Screenshot]

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Ukelele: I've already posted to the Ukelele-users Google group, thus:
http://groups.google.com/group/ukelele-users/browse_thread/thread/b9c8aadfd6969c 15?hl=en
If that's what you mean by "the Ukelele page", I'm all set (assuming he replies). If you meant somewhere else, please let me know. I didn't find an Apple discussion forum specifically for Ukelele.

How are duplicate parameters handled when starting WLS?

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