How can I give the Intellij compiler more heap space

Question

When I make an Intellij project  I keep getting the following out of memory error   I already increased my heap size in idea vmoptions    -Xms128m -Xmx2048m -XX MaxPermSize 1024m -XX ReservedCodeCacheSize 64m -ea   But I still get this error   Information The system is out of resources  Information Consult the following stack trace for details  Information java lang OutOfMemoryError  Java heap space Information     at com sun tools javac util Position LineMapImpl build Position java 139  Information     at com sun tools javac util Position makeLineMap Position java 63  Information     at com sun tools javac parser Scanner getLineMap Scanner java 1105  Information     at com sun tools javac main JavaCompiler parse JavaCompiler java 512  Information     at com sun tools javac main JavaCompiler parse JavaCompiler java 550  Information     at com sun tools javac main JavaCompiler parseFiles JavaCompiler java 804  Information     at com sun tools javac main JavaCompiler compile JavaCompiler java 727  Information     at com sun tools javac main Main compile Main java 353  Information     at com sun tools javac main Main compile Main java 279  Information     at com sun tools javac main Main compile Main java 270  Information     at com sun tools javac Main compile Main java 69  Information     at com sun tools javac Main main Main java 54  Information     at sun reflect NativeMethodAccessorImpl invoke0 Native Method  Information     at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 39  Information     at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 25  Information     at java lang reflect Method invoke Method java 597  Information     at com intellij rt compiler JavacRunner main JavacRunner java 71  Information Compilation completed with 1 error and 0 warnings Information 1 error Information 0 warnings Error Compiler internal error  Process terminated with exit code 3   What am I missing

User · Answer

I was facing  java lang OutOfMemoryError  Java heap space  error while building my project using maven install command   I was able to get rid of it by changing maven runner settings   Settings   Build  Execution  Deployment   Build Tools   Maven   Runner   VM options to -Xmx512m

User · Answer

There is a      idea64 exe   starter in      IntelliJ IDEA 13 1 5 bin   so you can address more space

User · Answer

Since IntelliJ 2016  the location is File   Settings   Build  Execution  Deployment   Compiler   Build process heap size

User · Answer

To resolve this issue follow the below given steps-  1   In inteli Go to File  Setting Option and Search for Vm Option In the field of Vm Option for Importer give value -Xmx512m   Intelij Setting Options  2   Go to Control Pannel Select View by  Large icons then Go to Java one promp window will appear with name java control pannel then go to java  Java VM Options  select view option  java view options  In Java Run time Environment Setting pass Run time Parameters as -Xmx1024m   3   If above given options does not work then change the size of pom xml

User · Answer

Current version   Settings  Preferences on Mac    Build  Execution  Deployment   Compiler   Build process heap size   Older versions   Settings  Preferences on Mac    Compiler   Java Compiler   Maximum heap size   Compiler runs in a separate JVM by default so IDEA heap settings that you set in idea vmoptions have no effect on the compiler

User · Answer

In my case the error was caused by the insufficient memory allocated to the  test  lifecycle of maven  It was fixed by adding  lt argLine gt -Xms3512m -Xmx3512m lt  argLine gt  to    lt pluginManagement gt     lt plugins gt       lt plugin gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-surefire-plugin lt  artifactId gt           lt version gt 2 16 lt  version gt           lt configuration gt               lt argLine gt -Xms3512m -Xmx3512m lt  argLine gt    Thanks  crazycoder for pointing this out  and also that it is not related to IntelliJ  in this case       If your tests are forked  they run in a new JVM that doesn t inherit Maven JVM options  Custom memory options must be provided via the test runner in pom xml  refer to Maven documentation for details  it has very little to do with the IDE

User · Answer

I had a similar problem with Ant build  started by hand from IDEA GUI   In my case there was the right solution to right click on the Ant task  choose properties and set a higher value to  Maximum heap space  Mb    and  Maximum stack space  Mb    input fields

User · Answer

I like to share a revelation that I had  When you build a project  Intellij Idea runs a java process that resides in its core ex  C  Program Files JetBrains IntelliJ IDEA 2020 3 jbr bin   The  quot build process heap size quot   as mentioned by many others  changes the heap size of this java process  However  the main java process is triggered later by the Idea s java process  hence have different VM arguments  I noticed that the max heap size of this process is 1 3 of the Idea s java process  while min heap is the half of max 1 6   To round up  When you set 9g heap on  quot build process heap size quot  the actual heap size for the compiler is max 3g and min 1 5g  And no need for restart is neccessary  PS  tested on version 2020 3

User · Answer

GWT in Intellij 12  FWIW  I was getting a similar error with my GWT application during  Build   Rebuild Project    This was caused by Intellij doing a full GWT compile which I didn t like because it is also a very lengthy process   I disabled GWT compile by turning off the module check boxes under  Project Structure   Facets   GWT    Alternatively there is a  Compiler maximum heap size  setting in that location as well

[intellij-idea] How can I give the Intellij compiler more heap space?

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