Getting error while processing large amount of data

[_AnonymousUser]

Talend is installed in a 32 bits system(4GB RAM). I was migrating 20GB data with some transformation. It was showing error like that

connecting to socket on port 3968
connected
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
disconnected
disconnected
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredField(Unknown Source)
at java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl.<init>(Unknown Source)
I have made  the following changes 
1) In tmap  set "Store temp data" option as true and also set a directory for temp data
2)Also set JVM arguments as per my system configuration
Still I am getting that error.
Please help me on that issue.
Thanks in advance.

[_AnonymousUser]

Hi,
I already set the batch size. In spite of that, Job is taking 20 hours to migrate 25 GB of data.
Is that issue related to Talend or Database ?
Thanks 

[Anonymous]

Hi,
What's the row rate? Would you mind sharing your job design screenshot with us?
Best regards
Sabrina

[_AnonymousUser]

Hi,
I am not able to upload any screenshot.
(tinput1,tinput2) --> tMap -->tfilter --> toutput
tOutput is being loaded with 1200 rows/s. Total data volume is 25 GB.
Thanks
Babul

[_AnonymousUser]

Hi Sabrina,
Please help me if there is any way to enhance the processing speed.
Thanks 
Babul

[Anonymous]

Hi Babul,
Performance issue is usually caused by the DB connection or the job design. You can register and log in as a Community member first after that  "UPLOAD"  button should be available on your end or could you please export the job and email it to us?
Best regards
Sabrina