topic Re: [resolved] java.lang.OutOfMemoryError: Java heap space in Talend Studio

[resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Sat, 16 Nov 2024 11:56:13 GMT

Hi All.
One Table have 4million rows.
I am Exporting 4million rows to csv file i am getting below error.
"Exception in thread "main" java.lang.OutOfMemoryError: Java heap space"
How to increase Java heap space?
Thanks
kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 20 Aug 2013 13:14:11 GMT

You can increase the heap from the Run->Advanced settings tab. You can also pass parameters etc, if not running in the dev environment. This is not always the best option.
What's your source? If it's MySQL, you can stream the data, for example.

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 20 Aug 2013 13:20:49 GMT

HI tal00000
Thanks for your feedback.
My Source is postgressql.
I increased JVM size : -Xmx2048M
Again I am getting below error:
"Could not create the Java virtual machine.
Error occurred during initialization of VM
Could not reserve enough space for object heap"
Thanks
Kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 20 Aug 2013 13:42:22 GMT

I think that's your own local issue. You can Google to find why you're getting this message.
tPostgressInput->Advanced settings supports "Use cursor" and a solution may lie there.

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 20 Aug 2013 18:03:08 GMT

HI tal00000
Thanks for your feedback.
tPostgressInput->Advanced settings supports "Use cursor".
check the Use cursor check box and enter 5000000 in Box.
But same problem.
"Exception in thread "main" java.lang.OutOfMemoryError: Java heap space"
Any ideas.......
Thanks
kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 20 Aug 2013 19:10:05 GMT

try 1000 and see where that gets you

HI tal00000
Thanks for your feedback.
tPostgressInput->Advanced settings supports "Use cursor".
check the Use cursor check box and enter 5000000 in Box.
But same problem.
"Exception in thread "main" java.lang.OutOfMemoryError: Java heap space"
Any ideas.......
Thanks
kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Wed, 21 Aug 2013 08:58:34 GMT

Hi,
Hope these articles on talend help center will be useful for your job.
Exception+Could+not+reserve+enough+space+for+object+heap
Exception+outOfMemory.
Best regards
Sabrina

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Thu, 22 Aug 2013 14:46:05 GMT

Hi Sabrina,
Thanks for your feedback.

I am modify the "TOS_DI-win32-x86.ini" configuration file based on your suggested article.
No changes, i am getting same error.
"Exception in thread "main" java.lang.OutOfMemoryError: Java heap space"

Thanks.
kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Thu, 22 Aug 2013 15:15:14 GMT

I am modify the "TOS_DI-win32-x86.ini" configuration file based on your suggested article.

The "TOS_DI-win32-x86.ini" configuration file is for Talend Studio application itself, not for the job execution, don't know which article or blob have you read, please refer to the KB article Exception+outOfMemory to learn how to allocate more memory to the job execution.
Shong

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Fri, 23 Aug 2013 18:04:45 GMT

Hi Shong,
Thanks for your feedback.

I am modify the "TOS_DI-win32-x86.ini" configuration file through talend help center reference article.
and also I tried to increase heap size as per your suggested article.
I tried to increase heap size like below steps:
1)In tMap I select the option Store on disk and given file path.
2) tPostgressInput->Advanced settings supports "Use cursor".
check the "Use cursor" check box and i given 4000000 value.
In Both the case i am getting below error:
"Exception in thread "main" java.lang.OutOfMemoryError: Java heap space".
3)In the Run view, open the Advanced Settings tab and select the Use specific JVM arguments box
and i set the JVM arguments like below:
-Xms512M
-Xmx2048M
In the above case i am getting below error.
"Could not create the Java virtual machine.
Error occurred during initialization of VM
Could not reserve enough space for object heap"

I tried to fix the OutofMemory issue all possible way.But it is escaping.
My job design.
tPostgressInput-->tMap-->tFileOutputDelimeted
Thanks to all for giving your valuable suggestions.
Thanks,
kumar.talend

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Sat, 24 Aug 2013 10:19:43 GMT

You re running Talend on a 32 bits OS so you cant exceed 1536Mo for the JVM memory.
Please use the cursor option, but not with 5M value. Lower it to 100 000 rows. Should work.

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

_AnonymousUser — Wed, 04 Sep 2013 10:10:25 GMT

Hi guys,
I am having exactly the same error with the user above in Talend. Did someone find a solution to this as yet?
Your help is much appreciated as I am in the middle of a project.
Thanks and Regards,
AG

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Sun, 13 Jul 2014 20:22:27 GMT

Hi,
I had the same error and these posts were helpful.
In the Postgres input, 'Advanced Settings' I set "use cursor" to 100 000.
In the Run 'Advanced Settings' I put both JVM arguments to Xms1024M and Xmx1024M.
It worked.

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Mon, 14 Jul 2014 03:44:51 GMT

Hi telena
Glad to see you figure it out and thanks for your feedback!
Best regards
Shong

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

_AnonymousUser — Thu, 05 Feb 2015 09:18:10 GMT

Hi,
Hope these articles on talend help center will be useful for your job.
Exception+Could+not+reserve+enough+space+for+object+heap
Exception+outOfMemory.
Best regards
Sabrina
Hey I want to generate data using java progam but i'm getting an error Exception in thread "main" java.lang.OutOfMemoryError: Java heap space. Can you plz help me

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Thu, 05 Feb 2015 09:46:19 GMT

Hi mukuljain015,

Hey I want to generate data using java progam but i'm getting an error Exception in thread "main" java.lang.OutOfMemoryError: Java heap space. Can you plz help me

Have you already changed your JVM arguments in 'Advanced Settings' of Run tab? Did this issue only repro on your specific job? Could you please give us more information about your current situation?

Best regards
Sabrina

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Tue, 16 Jun 2015 16:22:28 GMT

Hi, i have the same problem but it happens when procesing a Delimited File with 381996 records. I tried setting the VM arguments of the job to -Xms1024M and Xmx1024M but still throws the Java Heap Space Exception.

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
	at java.util.Arrays.copyOf(Arrays.java:2367)
	at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
	at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
	at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:415)
	at java.lang.StringBuilder.append(StringBuilder.java:132)

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Wed, 17 Jun 2015 05:22:06 GMT

Hi sbravo,
What's your whole job design? Is there any DB component?Did you use any tMap, tUniqRow, tSortRow component in your work flow? What's the RAM of your machine?
Best regards
Sabrina

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

cmadaka — Thu, 02 Jul 2015 13:41:44 GMT

other option you can try is selecting 'stream the file' in component view of the input file. (only for file based inputs)
Regards

Re: [resolved] java.lang.OutOfMemoryError: Java heap space

Anonymous — Thu, 02 Jul 2015 14:46:24 GMT

Hi,
I am using two source files (delimited .dat files ). Both the files have 2 million records . I am joining these files in tmap and sending the output to a flat file (.dat). but its giving me Java heap memory error after reading 1 lakh records.
I have tried all the options written in above comments ( tried increasing Xmx parameter, Store temp data =Yes), but still I am getting the error.
Can someone please suggest what should I Try.