Weblogic Portal 10.3 Switch to 64bit JVM

Question

Hi
I suspect this won't be possible but here's the situation:
We have a weblogic portal 10.3 installation built using the 32bit linux installer. Therefore the admin server and two managed servers (each of which are on different boxes) run using a 32 bit JVM.
Would it be possible to change the managed servers to a 64bit JVM and leave the admin server on 32bit?
If so, how could this be done? By simply changing the parameters in the server start up page?
Thanks

Answer 1

You can alter the setDomainEnv script in which you set a JAVA_HOME for each particular server, for example,
if [ "${SERVER_NAME}" = "" ] ; then
    SERVER_NAME="AdminServer"
    export SERVER_NAME
fi
if [ "${SERVER_NAME}" = "AdminServer" ] ; then
    JAVA_HOME="/home/oracle/aqualogic/jrockit_160_24_D1.1.2-4"
    export JAVA_HOME
# The USER_MEM_ARGS variable is used to override the standard memory arguments passed to java.
    USER_MEM_ARGS="-Xms1024m -Xmx1024m -Xns256m -XXkeepAreaRatio:25 -XXgcThreads:2 -Xgcprio:pausetime -XpauseTarget:200ms"
    export USER_MEM_ARGS
# If we want to use debugging we have to make sure the debug port is different for every server
    DEBUG_PORT="8453"
    export DEBUG_PORT
fi
if [ "${SERVER_NAME}" = "osb_server1" ] ; then
    JAVA_HOME="/home/oracle/aqualogic/jrrt-4.0.1-1.6.0"
    export JAVA_HOME
# The USER_MEM_ARGS variable is used to override the standard memory arguments passed to java.
    USER_MEM_ARGS="-Xms1024m -Xmx1024m -Xns256m -XXkeepAreaRatio:25 -XXgcThreads:2 -Xgcprio:pausetime -XpauseTarget:200ms"
    export USER_MEM_ARGS
# If we want to use debugging we have to make sure the debug port is different for every server
    DEBUG_PORT="8454"
    export DEBUG_PORT
fi
...