What could be the reason behind the error message "Java heap space exception in Eclipse" appearing while trying to use JavaScript autocomplete?

Whenever I attempt to utilize a JavaScript template on Eclipse, the program always freezes, displaying an error message stating: "Unhandled event loop exception Java heap space."

To troubleshoot this issue, I initiated a top command in Ubuntu for both the Eclipse and Java processes. Upon using auto-complete in Eclipse, I observed that the Java process skyrocketed to 100% CPU usage while memory remained at around 22%.

This problem appeared out of nowhere without any recent modifications to my Eclipse IDE...

Does anyone have any suggestions on how to resolve this?

UPDATE: I also realized that under the preferences window in: Javascript / Content Assist / Advanced, the selection for "Other Javascript Proposals" is enabled. Disabling this option resolved the issue. However, it resulted in missing content assist for variables and objects, thus only partially solving my dilemma.

javajavascripteclipse

Answer №1

This issue is a common one experienced by Eclipse users. To resolve it, navigate to the directory where your Eclipse program is located and open the "eclipse.ini" configuration file.

Look for the line that contains "-vm". Beneath this line, you will find three parameters related to memory allocation:

  • "Xms" specifies the minimum amount of memory allocated to the virtual machine.
  • "Xmx" indicates the maximum amount of memory.
  • "MaxPermSize" determines the memory allocated to the permgen of the virtual machine.

The error message you are encountering signifies that Java has exhausted its memory limit and requires more resources. When Java utilizes 100% of the CPU, it is due to the garbage collector operating extensively. Adjusting the "Xmx" value can provide additional breathing room for Java, but increasing the other two values slightly could also be beneficial. Here are my preferred configurations:

  • -Xms256m
  • -Xmx1024m
  • -XX:MaxPermSize=256m

Answer №2

After some investigation, I was able to pinpoint the issue. It turned out that by temporarily adding certain js files to my project (which ended up duplicating some of the original ones), the auto-complete feature in Eclipse was scanning through too many unnecessary files. To resolve this, I adjusted the src folder by taking the following steps:

  • Right-click on the project.
  • Select properties.
  • Go to Javascript.
  • Click on Include path.
  • In the source tab, I excluded the duplicate files/folders and others that were not needed for auto-complete.

By making these changes, I successfully resolved the issue and now enjoy faster auto-complete functionality in Eclipse.

Answer №3

(1) Head over to the open lunch setup, then navigate to the arguments tab and insert the following:

     -Xms512m
    -Xmx1024m
-XX:MaxMetaspaceSize=512m

Answer №4

To customize your AIDE experience, simply add the following commands to the AIDE.ini file and then restart the IDE.

-vmargs
-Dosgi.requiredJavaVersion=1.6
-Dlocaldev=true
-Xms256m
-Xmx512m
-XX:PermSize=128m
-XX:MaxPermSize=256m
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005

Answer №5

Spent hours on this problem but finally cracked it! If you're facing the same issue, try switching your JDK to an alternate JRE - it did the trick for me.

https://i.sstatic.net/CdPIh.jpg

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