Maven build on Eclipse: java.lang.OutOfMemoryError: Java heap space

Question

I know this has been asked multiple times before, but no solution worked so far in my case.

Situation: I'm trying to build a Maven project. The environment is JDK 1.7 on Eclipse.

Problem: Upon running a Maven build, I get the following error:

java.lang.OutOfMemoryError: Java heap space

What I've tried : In my pom.xml I tried from other StackOverFlow answers:

                        <fork>true</fork>
                        <meminitial>512m</meminitial>
                        <maxmem>1048m</maxmem>
                        <verbose>true</verbose>
                        <argLine>-Xmx1024m</argLine>

I also changed the memory settings in eclipse.ini

Any help will be greatly appreciated.

Did you check the vm-arguments of the runconfig of your Maven build? It may help to adjust the memory size here. For example, add -Xms1024M — tgallei
– tgallei, Commented Feb 6, 2020 at 7:58
Hi tgallei. Does this also have to be set in pom.xml as I tried the -Xmx parameter above ? — Abhishek
– Abhishek, Commented Feb 6, 2020 at 8:08
Java 7? Really? Are you using an outdated Eclipse and an outdated Maven too? Fix this first, everything else might be caused by that. — howlger
– howlger, Commented Feb 6, 2020 at 8:18
@FedericoklezCulloca Targeting an older Java 6 version does not require to use outdated tools. With Eclipse 2019-12 you can create Java 1.3 bytecode and with a Java 9 or higher JDK you can use the --release argument to create down to Java 6 bytecode without even having a Java 6 JDK. For security reasons, you should run your Java 6 and 7 application on a Java 8 VM. — howlger
– howlger, Commented Feb 6, 2020 at 8:49
@FedericoklezCulloca At the latest when there are no security updates for an outdated version anymore, upgrade. It's that simple. Sometimes you have to explain this to a decision maker without the technical knowledge. Most of us have faced this situation more than one time. In this case, not a single line of code has to be rewritten. On the other hand, outdated software means a high risk, which can cause high costs. — howlger
– howlger, Commented Feb 6, 2020 at 9:18

Jayanga Dissanayake · Accepted Answer · 2020-02-06 08:57:38Z

2

If you are trying this on a Linux machine, set MAVEN_OPTS as below and see.

export MAVEN_OPTS="-Xms1024m -Xmx4096m -XX:PermSize=1024m"

answered Feb 6, 2020 at 8:57

Jayanga Dissanayake

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Abhishek · Accepted Answer · 2020-02-06 09:07:51Z

1

@tagellei gave the correct answer (in the comments section). Thanks @tagellei

Right-click on the project --> Run As --> Run Configurations --> Click the JRE Tab on the pop-up window --> Under VM arguments, type: -Xms512M -Xmx1024M

answered Feb 6, 2020 at 9:07

Abhishek

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