WLS JVM Settings

Question

First of all I am new to WLS. I have been searching for this issue since yesterday but couldn't find a solution. I am getting this error:

C:\Oracle\MIDDLE~1\JDK160~1\bin\java -client   -Xms512m -Xmx1024m -XX:CompileThreshold=8000 -XX:PermSize=512m -XX:MaxPermSize=1024m -Dweblogic.Name=DefaultServer - ....
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

I have setted the JVM options in setDomainEnv.cmd (I am on Windows 7 64-bit) like this:

@REM IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values
set USER_MEM_ARGS=-Xms512m -Xmx1024m -XX:CompileThreshold=8000 -XX:PermSize=512m -XX:MaxPermSize=1024m

if NOT "%USER_MEM_ARGS%"=="" (
    set MEM_ARGS=%USER_MEM_ARGS%
)

I also changed these values:

set XMS_SUN_64BIT=512
set XMS_SUN_32BIT=512
set XMX_SUN_64BIT=1024
set XMX_SUN_32BIT=1024
set XMS_JROCKIT_64BIT=512
set XMS_JROCKIT_32BIT=512
set XMX_JROCKIT_64BIT=1024
set XMX_JROCKIT_32BIT=1024


if "%JAVA_VENDOR%"=="Sun" (
    set WLS_MEM_ARGS_64BIT=-Xms512m -Xmx1024m
    set WLS_MEM_ARGS_32BIT=-Xms512m -Xmx1024m
) else (
    set WLS_MEM_ARGS_64BIT=-Xms512m -Xmx1024m
    set WLS_MEM_ARGS_32BIT=-Xms512m -Xmx1024m
)

if "%JAVA_VENDOR%"=="Oracle" (
    set CUSTOM_MEM_ARGS_64BIT=-Xms%XMS_JROCKIT_64BIT%m -Xmx%XMX_JROCKIT_64BIT%m
    set CUSTOM_MEM_ARGS_32BIT=-Xms%XMS_JROCKIT_32BIT%m -Xmx%XMX_JROCKIT_32BIT%m
) else (
    set CUSTOM_MEM_ARGS_64BIT=-Xms%XMS_SUN_64BIT%m -Xmx%XMX_SUN_64BIT%m
    set CUSTOM_MEM_ARGS_32BIT=-Xms%XMS_SUN_32BIT%m -Xmx%XMX_SUN_32BIT%m
)

but they did not change the result. What is wrong with the above configuration?

Polythene

Do you have enough memory on the machine running WLS? the error indicates the JVM cannot allocate the required memory – Inspector

My machine has 16GB RAM. I have this "MAVEN_OPTS = -Xmx512m -XX:MaxPermSize=1024m" in my environment variables; but it also seems fine.. – Polythene

it was the MAVEN_OPTS parameter. Thanks for making me think about other options :) – Polythene

Answer 1

The problem was the MAVEN_OPTS environmental variable. It was: MAVEN_OPTS = -Xmx512m -XX:MaxPermSize=1024m I changed it to: -Xms512m -Xmx1024m --XX:PermSize=512m -XX:MaxPermSize=1024m

Polythene