Unable to set java heap space using -Xmx to 2GB or more even though the RAM size is 16GB.
I encounter an error saying "
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit"
This is seen while starting a Jenkins server on my Win2008 x64 machine.
Please let me know if I could change any system parameter which will allow me to allocate more memory.
Thanks
Run
java -version
and check you see
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
I expect you have a 32 bit version of java which is limited to 2 GB (as its not large address aware)
Found the fix with the help of clue given above by Neil.
Here is the full details:
Even though the machine is installed with JDK 1.7 x64 bit, Jenkins by default is not configured with this version available on the machine.
Jenkins has its own JRE bundled with the installer which is used by default.
To change it to a different JDK edit the Jenkins.xml file and modify the below value
<executable>jre\bin\java</executable>
to
<executable><jdk install path>\bin\java</executable>
This is now solved!!
Use "java -version" to ensure that your java hotspot is a 64-bit server vm.
theoretical limit for maximum heap size on 32 bit JVM is 4GB and for 64 bit JVM its 2^64
For more detail Click here
Related
About the following message:
Could not reserve enough space for 3145728KB object heap
I need some tips to understand what's going on
Points & Observations:
Running over Windows 10 x64 (16G Memory)
It only happens using this distribution: https://jdk.java.net/java-se-ri/8-MR3
It works fine using the build from AdoptOpenJDK: https://adoptopenjdk.net/?variant=openjdk8&jvmVariant=hotspot
At pom.xml, I've tried to add the following line: <extraJvmArgs>-Xms1G -Xmx4G -Xss1M -XX:-UseGCOverheadLimit -XX:MaxHeapSize=4G</extraJvmArgs>. But it "complains" The specified size exceeds the maximum representable size. (The original Xmx and MaxHeapSize was 3G)
Main Objective: To compile a project that was done previously using Oracle JDK8 with the Open JDK8
Any "lights"?
------ Edit
arg -d64 returns Error: This Java instance does not support a 64-bit JVM.
Maybe it's 32 bits the compilation from Java website?
I am using Windows 8 Pro 64 bit, Java 1.6 64 bit. I am trying to start Weblogic with following memory args (setDomainEnv.cmd):
set USER_MEM_ARGS=-Xmx2048m -XX:PermSize=512m -XX:MaxPermSize=1024m
But i'm getting an error:
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
Those mermory args are required to deploy the app, so i can't lower it (physical mermory installed - 8 GB).
Combined with -Xmx512M use -d64 to make sure you're running 64-bit VM. On a 64-bit machine I thought for sure I was running 64-bit virtual machine, but no. After installing 64-bit Java the -d64 option works and -Xmx allows much larger memory sizes.
java -d64 -Xmx512M mypackage.Test
Please see the below link for more solutions...
Could not reserve enough space for object heap
I am running weblogic 81. I had min=1024 and max =1024m with 4gb or RAM. 64bit processor and 32 bit java. I tried to increase the min/max value, it did not work. So, I changed the min/max to 512m and 1024m respectively. Thn it started to work.
When i installed for first time, the SOA environment developed mode, needed to do that:set JAVA_OPTIONS=%JAVA_OPTIONS% set DEFAULT_MEM_ARGS=-Xms512m -Xmx768m set PORT_MEM_ARGS=-Xms768m -Xmx1536m But over time, it shows me the same error and tube to make the following change: set JAVA_OPTIONS=%JAVA_OPTIONS% set DEFAULT_MEM_ARGS=-Xms512m -Xmx512m set PORT_MEM_ARGS=-Xms512m -Xmx512m But I'm still not sure why this happens.
I'm using a Windows 7 PC and i want to increase my java heap size but not for an application
So the command java -xmx4g e.g. is not possible.
I want to increase the java heap size in generel.
Is this somehow possible?
I appreciate every answer.
Sorry for my bad english
PS: I'm using 64-bit JVM on a 64-bit Win 7 PC
commands -java Xmx6G and set JAVA_OPTS=-Xms1024M -Xmx6144M does not work even when writing it in the startup.bat
I get the error in a program that consists of 10 same steps the first 4 are no problem but after the 4th i get the error.
Error: javax.xml.ws.soap.SOAPFaultException: Java heap space
Best regards,
Eros Kilinc
It's only possible on 64-bit JVM and 64-bit Windows, on 32-bit JVM / PC max heap size is about 1.2M
I want to increase heap java to avoid this error message
I have windows 7 64bit with java version
C:\Users\Rasha>java -version
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Client VM (build 1.5.0_15-b04, mixed mode)
java -Xms1024m -Xmx1024m -XX:PermSize=512m -XX:MaxPermSize=512m
Error occurred during initialization of VM
Could not reserve enough space for object
Could not create the Java virtual machine.
Although I have already 6 Gigabyte memory, how to made the system to recognize them?
any suggestions for this problem?
Use the 64 bit JVM. The 32 bit JVM cannot allocate much beyond 1.5 gb (eg right about where you are having difficulties) due to need for contiguous address space. I KNOW you are using the 32 bit JVM because it says "Client VM" above, and there is no "Client VM" for 64 bit.
thank you, I found the problem, I have multi version of java which conflicts the configuration
the solution is to remove all versions and install the java 64 bit version and the space is allocated well
thank you every body
I need larger Java Heap Size atleast 8GB minimum for my search application. I am working on Windows 7 (64 bit). I am not able to allocate more than 1500MB using CATALINA_OPTS environment variable. When I try allocating more the Tomcat crashes and is not able to start. I donwloaded 64 bit Java Run Time now and also subsequently 64 bit Apache Tomcat. Even now its not permitting me to start with more Heap Size. It (Tomcat 64 bit) crashes again. Any help would be appreciated.
I solved the problem. Actually I was trying to start Tomcat (startup.bat) in command prompt in Windows. It was crashing. Still dont know the reason for this (maybe related to starting 64 bit Tomcat on Dos/ When I start tomcat as a service using service.bat install it works perfectly fine.
From: Increasing the JVM maximum heap size for memory intensive applications
Try to specify -d64 on your CATALINA_OPTS.
Edit: Seems that option only has an effect on Solaris. Nevermind.
let the environment variables JAVA_HOME and PATH refer to your 64-Bit JVM. You can check it on command-line by executing java -version and %JAVA_HOME%\bin\java.exe -version (on Windows).