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
I have a 32 bit debian machine running and want to increase my tomcat's memory. I tried this:
export JAVA_OPTS="-Dfile.encoding=UTF-8 -Xms1024m -Xmx1536M -XX:PermSize=1024m -XX:MaxPermSize=1536m"
but i still get this error
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
Why is that? I know 32 bit can only use up to 2g but 1.5 should easily work...
SYSTEM: DEBIAN WHEEZY 32 BIT
JAVA: ORACLE JAVA 7u55 32bit
Xms and Permsize add up (see https://stackoverflow.com/a/1634424/821202), so you try to allocate 1024m + 1024m = 2048m initially.
My JVM config for a SUSE 32 bit and is working fine:
-Xms1536m -Xmx1536m -XX:PermSize=128m XX:MaxPermSize=256m
I have Java7 running on 32-bit Windows and 4 GB RAM, but:
java -Xmx4G -Xms4G -jar Minecraft.jar
java -Xmx3G -Xms3G -jar Minecraft.jar
java -Xmx2G -Xms2G -jar Minecraft.jar
...still does not work. Error:
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
java -Xmx1G -Xms1G -jar Minecraft.jar is working. Why?
Go to Start → Control Panel → System → Advanced system settings → advanced(tab) → Environment Variables → System Variables → New:
Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
If you go thru this IBM link on java, it says that on 32 bit windows the recommended heap size is 1.5 GB and the Maximum heap size is 1.8 GB. So your jvm does not gets initialized for -Xmx2G and above.
Also if you go thru this SO answer, clearly the DLL bindings are an issue for memory reservation changing which is no trivial task. Hence what may be recommended is that you go for 64-bit Windows and a 64-bit JVM. while it will chew up more RAM, you will have much more contiguous virtual address space.
I had this problem. I solved it with downloading 64x of the Java. Here is the link: http://javadl.sun.com/webapps/download/AutoDL?BundleId=87443
This was occuring for me and it is such an easy fix.
you have to make sure that you have the correct java for your system such as 32bit or 64bit.
if you have installed the correct software and it still occurs than goto
control panel → system → advanced system settings for Windows 8 or
control panel → system and security → system → advanced system settings for Windows 10.
you must goto the {advanced tab} and then click on {Environment Variables}.
you will click on {New} under the <system variables>
you will create a new variable. Variable name: _JAVA_OPTIONS Variable Value: -Xmx512M
At least that is what worked for me.
to make sure it runs the 64 bit version of java have it like this:
"c:\Program Files\Java\jre7\bin\java.exe" -Xmx1536M -Xms1536M -XX:MaxPermSize=256M -jar forge-1.6.4-9.11.1.965-universal.jar
take a look at what jre version you have installed just in case.. x64 should be in program files while x32 resides in Program Files (x86)
4gb RAM doesn't mean you can use it all for java process. Lots of RAM is needed for system processes.
Dont go above 2GB or it will be trouble some.
Before starting jvm just check how much RAM is available and then set memory accordingly.
this is what worked for me (yes I was having the same problem)
were is says something like java -Xmx3G -Xms3G put java -Xmx1024M
so the run.bat should look like
java -Xmx1024M -jar craftbukkit.jar -o false
PAUSE
Double click Liferay CE Server -> add -XX:MaxHeapSize=512m to Memory args -> Start server!
Enjoy...
It's work for me!
This is an old subject. But those using a stack, like Bitnami WildFly 13, should know that the stack installation has its own Java engine in \Bitnami\wildfly-13.0.0-1\java.
On Windows, the installation takes the stack Java own engine for default configurations and it starts Java with option -client, not -server, even though there is/are other Java engines installed in the system. You need to modify standalone.conf.bat to specify explicitly your Java path and add -server option along with the desired memory allocation.
Example:
set "JAVA_HOME=C:\Program Files\Java\jdk1.8.0_311”
set "JAVA_OPTS=-server -Xms2048M -Xmx4096M"
:JAVA_OPTS_SET
rem set "JAVA_HOME=C:\opt\jdk1.6.0_23\bin\java"
I hope this helps.
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).
I am getting the following exception repeatedly each time I try to run the program.
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
I tried to increase my virtual memory (page size) and RAM size, but to no avail.
How can I eliminate this error?
Run the JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)
This can also be caused by setting something too large on a 32-bit HotSpot vm, for example:
-Xms1536m -Xmx1536m
where this might/would work:
-Xms1336m -Xmx1336m
here is how to fix it:
Go to Start->Control Panel->System->Advanced(tab)->Environment Variables->System
Variables->New: Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
Variable name: Path
Variable value: %PATH%;C:\Program Files\Java\jre6\bin;F:\JDK\bin;
Change this to your appropriate path.
I ran into this when using javac, and it doesn't seem to pick up on the command line options,
-bash-3.2$ javac -Xmx256M HelloWorldApp.java
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
so the solution here it so set _JAVA_OPTIONS
-bash-3.2$ export _JAVA_OPTIONS="-Xmx256M"
-bash-3.2$ javac HelloWorldApp.java
Picked up _JAVA_OPTIONS: -Xmx256M
And this compiles fine.
This happens to me on machines with a lot of RAM, but with lower memory ulimits. Java decides to allocate a big heap because it detects the ram in the machine, but it's not allowed to allocate it because of ulimits.
32-bit Java requires contiguous free space in memory to run. If you specify a large heap size, there may not be so much contiguous free space in memory even if you have much more free space available than necessary.
Installing a 64-bit version of Java helps in these cases, the contiguous memory requirements only applies to 32-bit Java.
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
Open gradle.properties file in android folder.
Replace this line:
org.gradle.jvmargs=-Xmx1536M
with:
org.gradle.jvmargs=-Xmx512m
Explanation:
Max limit from Gradle document:
If the requested build environment does not specify a maximum heap size, the Daemon will use up to 512MB of heap.
I got the same error and resolved this by configuring it in the run.conf.bat
Run the JVM with the configuring run.conf.bat in Jboss5x
If free memory is not available AS you are passing in the statement then please make changes in run.conf.bat
set "JAVA_OPTS=-Xms512m -Xmx512m -XX:MaxPermSize=256m"
I had similar issues. I had installed 32 bit version of Java on a 64 bit machine.
By uninstalling that version and installing 64 bit version of Java. I was able to resolve the issue.
I know there are a lot of answers here already, but none of them helped me. In the end I opened the file /etc/elasticsearch/jvm.options and changed:
-Xms2G
-Xmx2G
to
-Xms256M
-Xmx256M
That solved it for me. Hopefully this helps someone else here.
Suppose your class is called Test in package mypackage. Run your code like this:
java -Xmx1024m mypackage.Test
This will reserve 1024 MB of heap space for your code. If you want 512 MB, you can use:
java -Xmx512m mypackage.Test
Use little m in 1024m, 512m, etc
Sometimes, this error indicates that physical memory and swap on the server actually are fully utilized!
I was seeing this problem recently on a server running RedHat Enterprise Linux 5.7 with 48 GB of RAM. I found that even just running
java -version
caused the same error, which established that the problem was not specific to my application.
Running
cat /proc/meminfo
reported that MemFree and SwapFree were both well under 1% of the MemTotal and SwapTotal values, respectively:
MemTotal: 49300620 kB
MemFree: 146376 kB
...
SwapTotal: 4192956 kB
SwapFree: 1364 kB
Stopping a few other running applications on the machine brought the free memory figures up somewhat:
MemTotal: 49300620 kB
MemFree: 2908664 kB
...
SwapTotal: 4192956 kB
SwapFree: 1016052 kB
At this point, a new instance of Java would start up okay, and I was able to run my application.
(Obviously, for me, this was just a temporary solution; I still have an outstanding task to do a more thorough examination of the processes running on that machine to see if there's something that can be done to reduce the nominal memory utilization levels, without having to resort to stopping applications.)
Error :
For the error, "error occurred during initialization of vm could not reserve enough space for object heap jboss"
Root Cause :
Improper/insufficient memory allocation to our JVM as mentioned below.
e.g. JAVA_OPTS="-Xms1303m -Xmx1303m -XX:MaxPermSize=256m" in jboss-eap-6.2\bin\standalone.conf or "JAVA_OPTS=-Xms1G -Xmx1G -XX:MaxPermSize=256M" in jboss-eap-6.2\bin\standalone.conf.bat which is nothing but JVM memory allocation pool parameters.
Resolution :
Increase the heap size. To increase the heap size,
goto -> jboss-eap-6.2\bin\standalone.conf.bat or jboss-eap-6.2\bin\standalone.conf
change ->JAVA_OPTS="-Xms256m -Xmx512m -XX:MaxPermSize=256m" where -Xms is Minimum heap size and -Xmx is Maximum heap size.
Usually its not recommanded to have same size for min and max.
If you are running your application from eclipse,
Double click on the server
select 'open launch configuration' you will be redirected to the window 'Edit launch configuration properties'.
In this windown goto the tab '(x)=Arguments'.
In VM Arguments, define your heap size as mentioned below
"-Dprogram.name=JBossTools: JBoss EAP 6.1+ Runtime Server" -server -Xms256m -Xmx512m -XX:MaxPermSize=256m -Dorg.jboss.resolver.warning=true
I recently faced this issue. I have 3 java applications that start with 1024m or 1280m heap size.
Java is looking at the available space in swap, and if there is not enough memory available, the jvm exits.
To resolve the issue, I had to end several programs that had a large amount of virtual memory allocated.
I was running on x86-64 linux with a 64-bit jvm.
I had right amount of memory settings but for me it was using a 64bit intellij with 32 bit jvm. Once I switched to 64 bit VM, the error was gone.
If you're running 32bit JVM, change heap size to smaller would probabaly help. You can do this by passing args to java directly or through enviroment variables like following,
java -Xms128M -Xmx512M
JAVA_OPTS="-Xms128M -Xmx512M"
For 64bit JVM, bigger heap size like -Xms512M -Xmx1536M should work.
Run java -version or java -d32, java--d64 for Java7 to check which version you're running.
Assuming you have enough free memory and you setup you JVM arguments correctly, you might have a problem of memory fragmentation. Check Java maximum memory on Windows XP.
Anyway, here is how to fix it:
Go to Start->Control Panel->System->Advanced(tab)->Environment Variables->System Variables->New:
Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
OR
Change the ant call as shown as below.
<exec
**<arg value="-J-Xmx512m" />**
</exec>
It worked for me.
Error occurred during initialization of VM
Could not reserve enough space for 1572864KB object heap
I changed value of memory in settings.grade file
1536 to 512 and it helped
Go to Start->Control Panel->System->Advanced(tab)->Environment Variables->System Variables->New:
Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
In case you are running a java program:
- run your program in a terminal using the correct command for linux it would be 'java -jar myprogram.jar' and add -Xms256m -Xmx512m, for instance: 'java -jar myprogram.jar Xms256m -Xmx512m'
In case you are running a .sh script (linux, mac?) or a .bat script (windows) open the script and look for the java options if they are present and increase the memory.
If all of the above doesn't work, check your processes (ctrl+alt+delete on windows) (ps aux on linux/mac) and kill the processes which use allot of memory and are not necessary for your operating system! => Try to re-run your program.
In CASSANDRA_HOME/bin/cassandra.bat you would find following configuration
REM JVM Opts we'll use in legacy run or installation
set JAVA_OPTS=-ea^
-javaagent:"%CASSANDRA_HOME%\lib\jamm-0.3.0.jar"^
-Xms**2G**^
-Xmx**2G**^
You can reduce 2G to some smaller number for e.g. 1G or even lesser and it should work.
Same if you are running on unix box, change in .sh file appropriately.
I got the same error and it got resolved when I deleted temp files using %temp% and restarting eclipse.
Sometimes it relates as
$ sysctl vm.overcommit_memory
vm.overcommit_memory = 2
If you set it to:
$ sysctl vm.overcommit_memory=0
It should work.
Replace -Xmx2G with -Xms512M or any greater memory size in cassandra.bat file in cassandra bin directory.
In my case I couldn't increase org.gradle.jvmargs=-Xmx... in gradle.properties beyond 1GB. It didn't work because I had two Java installation on my machine, one 32 bit (Gradle was using this one) and the other 64 bit. I resolved the problem by adding JAVA_HOME environment variable pointing to 64 bit Java.
No need to do anything just chnage in POM file like below
<configuration>
<maxmemory>1024M</maxmemory>
</configuration>