I have spring app, with intelliJ (community edition), ant, tomcat 8.5. There is build.xml (ant) file that works for others, but in my case it gives me an error :java.lang.OutOfMemoryError: Java heap space.
I have already tried:
Creating setenv.bat (I'm on windows) set JAVA_OPTS=-server -Xmx1024m.
Then, setting CATALINA_OPTS/JAVA_OPTS/ANT_OPTS system env. variable to -Xms512m -Xmx1024m
Then in Configure tomcat(GUI) -> Java -> Initial memory pool and Maximum memory pool to 512 and 1024.
Then in idea.exe.vmoptions (intelliJ), changed -Xms to 512m and -Xmx to 1024m
But it keeps giving me an error about not enough heap space, while other app (spring mvc as well) works perfectly fine on the same computer with the same intelliJ and the same tomcat configuration (but with maven).
I will download JVisualVM to get better overview what is happening but in the meantime maybe someone could give me a tip what else I could try to fix it?
I need to run a very big task in eclipse. So I changed the eclipse.ini to:
--launcher.defaultAction
openFile
-vmargs
-Xms64m
-Xmx1024m
but this is still not enough. When I increase the Xmx to 2048 and try to start eclipse I get the message:
Failed to create the Java VM
How to avoid this? My system has 8Gb of RAM. So 2gb for Java should be no problem. Why doesn't it start?
I am assuming you are using windows.
You can only apply maximum 2GB to a 32bit process. see http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778(v=vs.85).aspx#memory_limits
I suggest to switch to a 64bit JVM.
But probably as already suggested, you should also configure your task within eclipse.
your Eclipse is running in Java 32-bit that's why you are getting this message
check this link and you will get best answer for it:Eclipse error: 'Failed to create the Java Virtual Machine'
It is not possible to allocate higher memory for Heap. There is limitation for this. Please go through this oracle site. This gives you the idea in detail.
http://www.oracle.com/technetwork/java/javase/memorymanagement-whitepaper-150215.pdf
When I'm using the graphical layout editor after 5-10 minutes of working I get the error "java heap size". I tried to increase size in eclipse.ini:
-Xms512m
-Xmx1024m
But it doesn't helped. Please tell me who encountered this problem and how to solve it?
Your eclipse.ini settings will take effect only if you change following:
Run -> External Tools -> External Tool
Configurations. go to configuration that u use, under jre tab -select option
Run in same JRE in workspace.
For more info on the topic have a look at this link. What are the best JVM settings for Eclipse?
If sometimes you get this error and smetimes doesn't then It might happens because RAM is being used by other processes which require large memory. Close all the other Applications/processes and try to start/load the eclipse. It works.
You can set this on the command line before running eclipse so that eclipse has more mem: How do I set Java's min and max heap size through environment variables?
First of all, I have a box with 8gb of ram, so I doubt total memory is the issue.
This application is running fine on machines with 6gb or less.
I am trying to reserve 3GB of space using -Xmx3G under "VM Arguments" in Run Configurations in Eclipse.
Every time I try to reserve more than 1500mb, I get this error:
“Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G
What is going on here?
Could it be that you're using a 32-bit jvm on that machine?
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: ;C:\Program Files\Java\jre6\bin;F:\JDK\bin;
Change this to your appropriate path.
This is actually not an Eclipse-specific issue; it's a general
Java-on-Windows issue. It's because of how the JVM allocates memory on
Windows; it insists on allocating a contiguous chunk of memory, which
often Windows can't provide, even if there are enough separate chunks to
satisfy the allocation request.
There are utilities that will try to help Windows "defrag" its memory,
which would, in theory, help this situation; but I've not really tried
them in earnest so can't speak to their effectiveness.
One thing that I've heard sometimes that might help is to reboot Windows
and, before starting any other apps, launch the Java app that needs the
big chunk of memory. If you're lucky, Windows won't have fragmented its
memory space yet and Java will get the contiguous block that is asks for.
Somewhere out on the interwebs there are more technical explanations and
analyses of this issue, but I don't have any references handy.
I did find this, though, which looks helpful: https://stackoverflow.com/a/497757/639520
First the JRE of 32bits can't use more ~1.5Gb of ram. So if you want more, use a 64bits JRE.
Second, When a new JVM starts, this sum the -Xmx property of the all JVM that are running, and check if there is enough memory left on the system to run at their own -Xmx, if is not enough then the error occurs.
I was using Liferay with Tomcat server from eclipse IDE.
I was stuck with this same error on click on server start up.
Double click on server from eclipse.
it open up Server Overview page. Updated memory arguments from -Xmx1024m -XX:MaxPermSize=256m to -Xmx512m -XX:MaxPermSize=256m.
Then it was working for me.
Make sure that Eclipse is actually running the same JVM you think it's running. If you use java in your web browser ever, you likely have a 32-bit version floating around too that might be taking precedence if it installed or updated lately.
To be absolutely sure, I recommend adding these two lines to your eclipse.ini file at the top:
-vm
C:/Java/jdk1.6.0_27/bin
...where on my machine C:/Java/jdk1.6.0_27/bin where the JVM I know is 64-bit is located. Be sure to have the bin folder there.
(As a bonus, on Windows 7, this also allows you to actually "pin the tab" which is why I had to do this for my own usage)
This is the issue of Heap size. Edit your .bat (Batch file). It might be showing Heap size 1024. Change it to 512 Then it should work.
Just put # symbol in front of org.gradle.jvmargs=-Xmx1536m in gradle.properties
# org.gradle.jvmargs=-Xmx1536m
I also had the same problem while using Eclipse which was 32 bit and the JVM used by it was 64 bit.
When I routed the Eclipse to 32 bit JVM then it worked
I know that i am a bit late, but here my answer comes:
I just installed the Java online Version from Oracle(not the offline 64-Bit one).
After having added the JAVA_HOME ENV variable, it just worked!
Hope I could help :)
Probably you are trying wrong options anyways.
I got a similar error with supporting error log:
Java HotSpot(TM) Client VM warning: ignoring option PermSize=32M; support was removed in 8.0
Java HotSpot(TM) Client VM warning: ignoring option MaxPermSize=128M; support was removed in 8.0
Im my case, the software did not support java 8 yet(script was using old JVM arguments) but I had had java 8 by default.
One of the reason for this issue is no memory available for Tomcat to start. Try to delete the unwanted running software from windows and restart the eclipse and tomcat.
Solution is simple. No need to go deep into this issue.
If you are running on 64bit machine then follow below steps:
Unistall 32 bit java first (check in C:\Program Files (x86) for its existence)
Install the newer version JDK kit 64 bit (includes JRE)
Set the environment path (To avoid conflict error if you have two different 64bit JRE)
Check in command prompt by typing javac command.
Restart / Done
You can have two different Java installed but don't forgot to set path.
Please set JAVA_OPTS=-Xms256m -Xmx512m in environment variables, it should solve the issue, it worked for me.
Find out if you are using a 32bit version or 64bit version of Java. To know that use the command
java -version
The 3rd line of the output should give you if it 32bit or 64bit.
If it is 32bit uninstall and install a 64bit version.
I'm using Eclipse Indigo and I'm following this tutorial, after I run the example project and get my HPROF file, I tried to open it (see 3.3 Use MAT in the link I gave), I just keep receiving 'Out of Memory' error. I checked the file generated and its size is about 350MB. So I edited the eclipse.ini file to add more memory (I changed -xmx to 1024m), also did the same for the java app in run->run configurations. But no mather what number I give to -xmx I'm still getting the same heap space error. Any ideas? or is there any other tool that I can use?
In my eclipse.ini I use the following settings:
-vmargs
-XX:PermSize=256m
-XX:MaxPermSize=256m
-Xms256m
-Xmx1024m
I am able to open big hprofs with some hundreds of megabytes.