I would suggest trying to decrease your value of -Xmx5120m, as described here:
https://wiki.eclipse.org/FAQ_How_do_I_increase_the_heap_size_available_to_Eclipse%3F
Some JVMs put restrictions on the total amount of memory available on the heap.
Answer from Alex Mi on Stack Overflow Top answer 1 of 2
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I would suggest trying to decrease your value of -Xmx5120m, as described here:
https://wiki.eclipse.org/FAQ_How_do_I_increase_the_heap_size_available_to_Eclipse%3F
Some JVMs put restrictions on the total amount of memory available on the heap.
2 of 2
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It depends on what Java are you using. If you are using 32 bit Java you may not be able to use more than 2GB.
DigitalOcean
digitalocean.com › community › tutorials › eclipse-out-of-memory-error-increasing-heap-memory-permgen-space
Eclipse OutOfMemory Error Fix by increasing Heap Memory/Permgen Space | DigitalOcean
August 4, 2022 - You can check the location of the ... the eclipse.ini file, just open it in your favorite text editor. You can increase the maximum heap size by editing -Xmx value....
Updating eclipse max heap size in eclipse.ini has no effect - Stack Overflow
I have updated the contents of eclipse.ini to include -Xmx4G instead of -Xmx2G, but re-starting eclipse I still see (hovering over the memory utilization bar copied below) that the maximum heap size is a little less than 2G. More on stackoverflow.com
Eclipse Memory Analyser,but always shows An internal error occurred?
I believe you are facing a Java heap space OutOfMemoryError when you attempt to open your heap dump (java_pid2584.hprof) using Eclipse Memory Analyzer (MAT). Basically this type of errors will occur since the Memory Analyzer itself runs on the Java Virtual Machine (JVM). Also a large enough heap size is required to process and parse the heap dump file you’re loading. There is a common behavior that JVM running MAT may not have sufficient memory allocated, especially for the case when you use a heap dump file that is very large. Certain scenarios which have files with file size of just 100-200 MB, which sounds like a small file may even lead to this error when complex object graphs are present. In order to resolve this issue, you will have to increase the maximum heap size allocated to the MAT application. Making some changes to the MemoryAnalyzer.ini file located in your MAT installation directory can help you to sort this out. Try adding or adjusting the following lines (or increase the values if they already exist): -Xms512m -Xmx4096m This settings will allocate an initial heap size of 512 MB and a maximum of 4 GB for the MAT process. You can increase -Xmx further depending on your system’s available memory and the size of the heap dump you’re analyzing. Once updated, restart the Memory Analyzer and try opening your heap dump again. This will resolve the "An internal error occurred during: Parsing heap dump" issue.If you'd like to learn more about Memory Analyzer to go beyond OutOfMemoryErrors and catch memory leaks in your application, you can refer to this blog . More on reddit.com
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July 24, 2025java - Why eclipse does not open when I change the max heap size? - Stack Overflow
I have installed MAT in eclipse and also the plugin to open IBM format heap dumps. When I try to open a heapdump with File->Open from eclipse I get a message box error saying: An internal error More on stackoverflow.com
good eclipse.ini memory settings for 8gb?
How much memory do your 3 web apps actually use/need? Giving the JVMs a lot more than that won't help. More on reddit.com
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April 29, 2015Videos
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#heap How to increase Java heap size in windows 10 (Make Java faster) ...
Java67
java67.com › 2016 › 02 › how-to-increase-heap-size-of-java-program-eclipse-command-line.html
How to Increase Heap Size of Java Program running in Eclipse [Example] | Java67
2. Make sure there is no space between -Xmx and 1G e.g. -Xmx 1G will also throw invalid heap size error. 3. One more common mistake you need to avoid is using suffix like GB, MB, and KB instead of G, M, and K, those will also result in could ...
Mkyong
mkyong.com › home › eclipse › eclipse – java.lang.outofmemoryerror: java heap space
Eclipse - java.lang.OutOfMemoryError: Java heap space - Mkyong.com
June 28, 2021 - But, if no reason constantly crashes the Eclipse IDE, we can increase the heap size and perm gen in eclipse.ini. /Users/mkyong/Downloads/eclipse/Eclipse.app/Contents/MacOS/eclipse.ini · -startu openFile -showsplash //... -XX:MaxPermSize=512m -Xms512m -Xmx1024m //... -Xdock:icon=../Resources/Eclipse.icns -XstartOnFirstThread
Blogger
javarevisited.blogspot.com › 2016 › 10 › how-to-increase-heap-size-of-eclipse-OutOfMemoryError.html
How to increase heap size of Eclipse - Solving OutOfMemoryError? Example
May 17, 2023 - The second way to increase heap size is just to pass the -vmargs directly to the eclipse.exe file if you are starting it from a desktop shortcut or a startup script as shown below: eclipse [normal arguments] -vmargs -Xmx512m [more VM args] Now, ...
Blogger
javarevisited.blogspot.com › 2012 › 12 › invalid-initial-and-maximum-heap-size.html
Invalid initial and maximum heap size in JVM - How to Fix
The particular error listed at the top ("Invalid initial heap size: -Xms=1024M") is caused by having the equals sign, so changing it to just "-Xms1024M" should take care of it, as I just found out from a misconfiguration of my own.
Coderanch
coderanch.com › t › 478404 › ide › increase-heap-size-eclipse
how to increase heap size with eclipse? (IDEs and Version Control forum at Coderanch)
I would try setting it to -Xmx1536m, or whatever the largest heap you can manage on your machine. That should give enough room for Eclipse and your app. Of course, if you plan to debug you might need more room... The above assume that you are running your app in the same JVM as Ecipse, and ...
Eclipse
bugs.eclipse.org › bugs › show_bug.cgi
456585 – [IDE] Default heap max (512MB) is too small
Bugzilla – Bug 456585 [IDE] Default heap max (512MB) is too small Last modified: 2020-05-19 13:24:29 EDT
Java67
java67.com › 2013 › 08 › guide-of-javalangoutofmemoryerror-java-heap-space-tomcat-eclipse-minecraft-jboss.html
java.lang.OutOfMemoryError: Java heap space : Cause and Solution | Java67
If you are getting java.lang.O... you don't have any control on source code, you can simply find their start-up script and can increase the value of -Xmx parameter....
Stack Overflow
stackoverflow.com › questions › 34275442 › updating-eclipse-max-heap-size-in-eclipse-ini-has-no-effect
Updating eclipse max heap size in eclipse.ini has no effect - Stack Overflow
December 16, 2015 - Let me trace back how the Unity desktop launches eclipse though, making sure it does not override the .ini file. Sorry about that. ... It only takes setting or updating the value of -Xmx such as to -Xmx4G. But this can be done either in eclipse.ini ...
Gentoo Forums
forums.gentoo.org › board index › assistance › desktop environments
eclipse - increase heap space size [SOLVED] - Gentoo Forums
April 24, 2017 - Hi all, I have been banging my head for few days on this issue and I cant figured it out. Here is what I did: I deleted .eclipse and .metadata, then I went to window->preferences->General and checked show heap status. The heap status shows max 256M (which is way too small).
EdwardsLab
edwards.flinders.edu.au › increasing-heap-size-in-eclipse
Increasing Heap Size in Eclipse | EdwardsLab
July 7, 2014 - for Mac: located under Eclipse ... space. The problem was that the JVM was restricting the amount of memory available on the heap so arguments had to be passed to the VM to alter this....
Coderanch
coderanch.com › t › 384456 › java › Increase-JVM-heap-size-eclipse
Increase JVM heap size of eclipse (Java in General forum at Coderanch)
Hi, Can anyone please tell me on how i can increase the heap size of eclipse?when running a program i am getting the error as follows: Loading... Exception in thread "main" java.lang.OutOfMemoryError: Java heap space Thank you in advance!! ... Use the -Xmx command line switch. Specifically ...
Position Is Everything
positioniseverything.net › home › invalid maximum heap size: how to fix your mistake
Invalid Maximum Heap Size: How To Fix Your Mistake - Position Is Everything
December 29, 2025 - Set the initial and maximum heap sizes using the “-Xms” and “-Xmx” options when starting the JVM. For example, “java -Xms256m -Xmx1g your_java_application”. Replace the “Xms” and “Xmx” values in the previous command to suit ...
Paul Gu
blog.paulgu.com › home › 6 common errors in setting java heap size
6 Common Errors in Setting Java Heap Size - Paul Gu | Blog
July 19, 2008 - * The heap size is larger than JVM thinks you would ever need. For example, java -Xmx256g BigApp Invalid maximum heap size: -Xmx256g The specified size exceeds the maximum representable size.
Reddit
reddit.com › r/sre › eclipse memory analyser,but always shows an internal error occurred?
r/sre on Reddit: Eclipse Memory Analyser,but always shows An internal error occurred?
July 24, 2025 -
java.lang.OutOfMemoryError: Java heap space Dumping heap to java_pid2584.hprof ... Heap dump file created [106948719 bytes in 4.213 secs] Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:2760) at java.util.Arrays.copyOf(Arrays.java:2734) at java.util.ArrayList.ensureCapacity(ArrayList.java:167) at java.util.ArrayList.add(ArrayList.java:351) at Main.main(Main.java:15) But when i open head dump java_pid2584.hprof via Eclipse Memory Analyser,but there is always message: An internal error occurred during: "Parsing heap dump from **\java_pid6564.hprof'".Java heap space
Java67
java67.com › 2012 › 10 › could-not-create-java-virtual-machine.html
Could not create the Java virtual machine Invalid maximum heap size: -Xmx | Java67
"Could not create the Java virtual machine" is a general JavaVirtual Machine error when you run java command directly or indirectly and it's not able to create a virtual machine because of invalid maximum heap size, invalid minimum heap size, or just an error in command line. This error not only come when you run Java program from the command line but also when you run them using any IDE like Eclipse or Netbeans.
Blogger
javarevisited.blogspot.com › 2012 › 12 › invalid-initial-and-maximum-heap-size.html
Javarevisited: Invalid initial and maximum heap size in JVM - How to Fix
$ test@nykdev32:~ java -version ... java -Xmx4096M HelloWorld Invalid maximum heap size: -Xmx4096M The specified size exceeds the maximum representable size....
Stack Overflow
stackoverflow.com › questions › 11840523 › why-eclipse-does-not-open-when-i-change-the-max-heap-size
java - Why eclipse does not open when I change the max heap size? - Stack Overflow
August 7, 2012 - This is usually due to not enough memory on the machine. Also note that on Windows XP which is 32-bit, the VM can only use close to about 2GB of RAM and that is including the heap, perm gen space, DLL loading, etc.