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From Antoine Levy Lambert <anto...@gmx.de>
Subject Re: Frequent java.lang.OutOfMemoryError: Java heap space error
Date Tue, 08 Dec 2009 13:42:42 GMT

Hello Vino,

how is base.path defined in your script ?

Do you have a blurb somewhere looking like

<path id="base.path">
   <fileset dir="lib">
      <include name="*/*.jar"/>
   </fileset>
</path>

It looks like base.path is replaced at runtime literally with "<classpath>"

Regards,

Antoine


vinothofindia wrote:
> Hi,
>
> I have been encountering same issue.
>
> I got "java.lang.OutOfMemoryError: Java heap space" when I tried to compile
> my code with ANT.
> So, I tried setting ANT_OPTS env var, that doesn't resolve the issue
> permanently and the issue occurred intermittently.
>
> Then I tried setting fork attribute in my build.xml, which brought up a
> following exception
>
> Error running C:\jdk1.5.0_15\bin\javac.exe compiler
> at
> org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:537)
> at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:385)
> at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:107)
> at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:269)
> at org.apache.tools.ant.Task.perform(Task.java:364)
> at org.apache.tools.ant.Target.execute(Target.java:301)
> at org.apache.tools.ant.Target.performTasks(Target.java:328)
> at org.apache.tools.ant.Project.executeTarget(Project.java:1215)
> at org.apache.tools.ant.Project.executeTargets(Project.java:1063)
> at org.apache.tools.ant.Main.runBuild(Main.java:632)
> at org.apache.tools.ant.Main.startAnt(Main.java:183)
> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:197)
> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:56)
> Caused by: java.io.IOException: CreateProcess: C:\jdk1.5.0_15\bin\javac.exe
> -J-Xms256m -J-Xmx256m -d C:\target\classes -classpath <classpath>
> at java.lang.ProcessImpl.create(Native Method)
> at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
> at java.lang.ProcessImpl.start(ProcessImpl.java:30)
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
> at java.lang.Runtime.exec(Runtime.java:591)
> at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.tools.ant.taskdefs.Execute$Java13CommandLauncher.exec(Execute.java:808)
> at org.apache.tools.ant.taskdefs.Execute.launch(Execute.java:445)
> at org.apache.tools.ant.taskdefs.Execute.execute(Execute.java:459)
> at
> org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.executeExternalCompile(DefaultCompilerAdapter.java:449)
> ... 33 more
>
>
> The javac tag I used in my build.xml is:
> <javac srcdir="${src}" destdir="${classDst}" debug="${debug}"
>         fork="yes"
>         memoryInitialSize="256m"
>         memoryMaximumSize="256m"
>         executable="${env.JAVA_HOME}/bin/javac"
>         source="${compiler.opts.vm.source}"
>         target="${compiler.opts.vm.target}"
>         includes="${projectDir}/xxx/**"
>         excludes="${projectDir}/xxxTest/**" >
>          <classpath refid="base.path" />
>
> </javac>
>
>
> I have even tried with following javac tag in build.xml:
> <javac srcdir="${src}" destdir="${classDst}" debug="${debug}"
>         fork="yes"
>         memoryInitialSize="512m"
>         memoryMaximumSize="512m"
>         executable="${env.JAVA_HOME}/bin/javac"
>         deprecation="off"
>         optimize="off"
>         verbose="no"
>         source="${compiler.opts.vm.source}"
>         target="${compiler.opts.vm.target}"
>         includes="${projectDir}/xxx/**"
>         excludes="${projectDir}/xxx/Test/**" >
>         <classpath refid="base.path" />
> </javac>
>
>
>
> Please help me to get rid of this issue, I have been struggling with this
> issue for the last 5 days.
>
>
> Thanks in advance,
> _Vino
>
>
>
> kermitt wrote:
>   
>> have you tried to fork and specify the memoryInitialSize and
>> memoryMaximumSize? 
>>
>> you should try with another compiler if you were using Sun Javac, try
>> jikes or even better eclipse compiler
>> (org.eclipse.jdt.core.JDTCompilerAdapter)
>>
>> my 2cts...
>>
>>
>>
>> -----Original Message-----
>> From: Ravi Roy [mailto:ravi.aroy@gmail.com] 
>> Sent: Monday, December 10, 2007 4:37 PM
>> To: user@ant.apache.org
>> Subject: Frequent java.lang.OutOfMemoryError: Java heap space error
>>
>> Hello all,
>>
>> I am running my product build with cruisecontrol using ant 1.7.0. I have
>> set
>> ANT_OPTS=-Xms=1536m -Xmx1536m, but still I am getting below mentioned
>> error,
>> I have searched mail archive, but I see ANT_OPTS settings, which I have
>> already set, I get the following error :
>>
>>     [javac] The system is out of resources.
>>     [javac] java.lang.OutOfMemoryError: Java heap space
>>
>> Am I doing right to set ANT_OPTS variable to increase the heap size ? I am
>> running my build machine using Windows XP with 2.0 Gigabyte of physical
>> RAM.
>>
>> Does somebody know how to handle this ? It is more frequent now.
>>
>> Thanks in adavnace for thoughts.
>>
>> Regards,
>> Ravi
>>
>>
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>>
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>>
>>
>>     
>
>   


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