topic Re: Heap space, garbage collection and Error occurred during initialization of VM Talend in Talend Studio

Heap space, garbage collection and Error occurred during initialization of VM Talend

asafrian1700127126 — Thu, 28 Mar 2024 07:00:50 GMT

I can't run the job the following error appearsI can't run the job the following error appears

Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Error occurred during initialization of VM
Unable to allocate tables for parallel garbage collection for the requested heap size.
Job EXPORT_TO_SKK_VIEW ended at 13:08 28/03/2024. [exit code=1]

Following are the memory settings for the VM

then suddenly a garbage collection appears as follows

So what is garbage collection?

What do I have to do?
I have added xms and xmx but the same error
How do I delete the trash that causes memory to become full like this?

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

MahiwalVinit — Thu, 28 Mar 2024 09:28:02 GMT

What is your studio version ?
How much JVM has been given in studio's .ini file ? Also check your system's memory usage is it sufficiently free to allocate 1G ?

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

asafrian1700127126 — Tue, 02 Apr 2024 04:02:16 GMT

I use TOS_ESB-win-x86_64 "Talend Open Studio for ESB" Version: 5.6.3 Build id: V5.6.3_20160127_1448 and JAVA_VERSION="1.7.0"

.ini file :

-vmargs
-Xms64m
-Xmx1536m
-XX:MaxPermSize=512m
-Dfile.encoding=UTF-8

The memory allocation:

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

MahiwalVinit — Tue, 02 Apr 2024 11:16:16 GMT

Please try increasing -Xmx1536m to -Xmx2024m in .ini file. Also make sure you have 50% system memory available to run Studio, 87% is high memory usage

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

asafrian1700127126 — Wed, 03 Apr 2024 01:45:34 GMT

Hi, I changed the jvm arguments for each job from -xms256mb -xmx1024mb to -xms512mb -xmx2048mb but still experienced the same error (even though the .ini file had not been changed).
If you only change the .ini file, will it only affect Talend performance in general, such as processing speed, and not affect the performance of each job being run, or what?

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

jlolling — Thu, 11 Apr 2024 09:01:14 GMT

Try to set the job jvm option to

-Xmx2G

and of course set the studio memory in the ini file also at least to

-Xmx4G

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

jeoste — Thu, 18 Apr 2024 07:22:24 GMT

Did you succeeded to run the job before ?
How many job are included in this job ? Try to comment some subjob and see if you can run it, if yes you have to increase the RAM
If you can't increase the ram, check for optimizing some subjob/process, removing useless java code etc

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

Jackson0123 — Wed, 23 Jul 2025 12:36:00 GMT

This error indicates that there isn't sufficient memory for the automatic Java Garbage Collection to run. Java Process memory has 2 regions:

Heap Memory
Native Memory

Memory for Java GC comes from the Native Memory Region. Looks like your machine doesn't have sufficient RAM capacity to be allocated for Java GC. You can learn more about Java Memory Regions from here: https://blog.gceasy.io/understanding-native-memory-tracking-in-java/

There are few steps we can follow to resolve these issue,

Better to reduce the heap size (-Xms and -Xmx). So that you can give room for Native Memory.
Please do ensure that you are using a 64-bit version of Java to allow larger memory allocation.
This may sound obvious, but yes, it really does help. Always check whether you have closed the unnecessary applications to free up RAM.
Verify and adjust Talend job components to avoid excessive memory usage.

With these changes, the job will be able to start and run successfully.

Re: Heap space, garbage collection and Error occurred during initialization of VM Talend

Denis_Segard — Wed, 23 Jul 2025 19:16:08 GMT

Hello,

You can test to set the variable _JAVA_LAUNCHER_DEBUG before launching the Studio :

and check the messages displayed ...

Kind regards
Denis