WebLogic Server Performance

https://blogs.oracle.com/imc/entry/weblogic_server_performance_and_tuning


For all server JVM you could edit the file  default value is 
-Xms256m -Xmx512m" and you can change it based on your requirements


 /user_projects/domains/TEST_DOM/bin/setDomainEnv.sh


if [ "${JAVA_VENDOR}" != "HP" ] ; then
        if [ "${VM_TYPE}" = "HotSpot" ] ; then
        ##      WLS_MEM_ARGS_64BIT="-Xms256m -Xmx512m"
                WLS_MEM_ARGS_64BIT="-Xms1024m -Xmx2048m"
                export WLS_MEM_ARGS_64BIT
##              WLS_MEM_ARGS_32BIT="-Xms256m -Xmx512m"
                WLS_MEM_ARGS_32BIT="-Xms1024m -Xmx2048m"
                export WLS_MEM_ARGS_32BIT
        fi
fi