I have generated a heap dump into a file using the jmap command and I am doing memory analysis using Eclipse Mars. I am basically trying to figure out the memory leak in Tomcat 8. Whenever, I start Tomcat 8, I keep on getting the Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded in the tomcat logs and hence I am doing all this to figure out the leak.
I can see the following report(screenshot) in eclipse but I am unable to figure out how to fix this problem. Please let me know if more screenshots are needed.
Another thing I have tried before performing above steps :
I set up a setenv.bat file and included the following instructions in it :
set JAVA_OPTS=-Dfile.encoding=UTF-8 -Xms128m -Xmx1024m -XX:PermSize=64m -XX:MaxPermSize=256m
However, this thing didn't help me.
Could you elaborate it more? The leak might be occurring because of your deployed applications
Related
I know that this is one of the most frequently asked questions, but I've tried everything (or almost everything) and are still at a dead end.
There is an Eclipse project with some SWTBot test cases that fail with java heap space error when I try to run them. In addition, Eclipse also fails with same error after some time of work.
I tried to do the following:
-Set arguments in run configuration like -Xms768m -Xmx1024m
-Set same arguments in eclipse.ini (and also arguments -XX:PermSize=512m,-XX:MaxPermSize=1024m)
-Set runtime parameters in "Configure java" -Xms512m -Xmx1024m
That was not helpful.
I also tried to look at memory usage and max heap space was about 268 mb!
Is there any idea how to cure it?
Thanks,
Max
The screenshot shows the heap size is 256MB. It seems there is no more memory for java to run.
How's the whole physical memory? -XX:PermSize doesn't need to be so much, 128MB or 256MB is enough. And eclipse doesn't need to be allocated too much memory either. -Xms and -Xmx can be the same.
I have spring app, with intelliJ (community edition), ant, tomcat 8.5. There is build.xml (ant) file that works for others, but in my case it gives me an error :java.lang.OutOfMemoryError: Java heap space.
I have already tried:
Creating setenv.bat (I'm on windows) set JAVA_OPTS=-server -Xmx1024m.
Then, setting CATALINA_OPTS/JAVA_OPTS/ANT_OPTS system env. variable to -Xms512m -Xmx1024m
Then in Configure tomcat(GUI) -> Java -> Initial memory pool and Maximum memory pool to 512 and 1024.
Then in idea.exe.vmoptions (intelliJ), changed -Xms to 512m and -Xmx to 1024m
But it keeps giving me an error about not enough heap space, while other app (spring mvc as well) works perfectly fine on the same computer with the same intelliJ and the same tomcat configuration (but with maven).
I will download JVisualVM to get better overview what is happening but in the meantime maybe someone could give me a tip what else I could try to fix it?
I am getting the following error when I open a particular project in JDeveloper
Uncaught exception
java.lang.OutOfMemoryError: Java heap space
j.util.Arrays.copyOf(Arrays.java:2882)
j.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)
j.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
j.lang.StringBuffer.append(StringBuffer.java:224)
org.tmatesoft.svn.core.SVNErrorMessage.getFullMessage(SVNErrorMessage.java:257)
org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:58)
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminAreaFactory.open(SVNAdminAreaFactory.java:163)
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.doOpen(SVNWCAccess.java:364)
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.open(SVNWCAccess.java:272)
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.open(SVNWCAccess.java:265)
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.openAnchor(SVNWCAccess.java:145)
org.tmatesoft.svn.core.wc.SVNStatusClient.doStatus(SVNStatusClient.java:320)
org.tmatesoft.svn.core.javahl.SVNClientImpl.status(SVNClientImpl.java:296)
org.tmatesoft.svn.core.javahl.SVNClientImpl.status(SVNClientImpl.java:278)
org.tigris.subversion.svnclientadapter.javahl.AbstractJhlClientAdapter.getStatus(AbstractJhlClientAdapter.java:480)
org.tigris.subversion.svnclientadapter.svnkit.SvnKitClientAdapter.getStatus(SvnKitClientAdapter.java:141)
org.tigris.subversion.svnclientadapter.javahl.AbstractJhlClientAdapter.getStatus(AbstractJhlClientAdapter.java:466)
o.ji.vcs.svn.SVNURLInfoCacheSimpleStrategy.getURLInfo(SVNURLInfoCacheSimpleStrategy.java:79)
o.ji.vcs.svn.SVNURLInfoCache.getLastChangedRevision(SVNURLInfoCache.java:69)
o.ji.vcs.svn.SVNOverlayProducer.createTooltip(SVNOverlayProducer.java:240)
o.ji.vcs.svn.SVNOverlayProducer.getDecoratedOverlay(SVNOverlayProducer.java:144)
o.ji.vcs.svn.SVNOverlayProducer.produceOverlay(SVNOverlayProducer.java:113)
o.j.vcs.spi.VCSOverlayItemProducer.produceOverlays(VCSOverlayItemProducer.java:83)
o.j.vcs.spi.VCSOverlayItemProducer.getOverlayItems(VCSOverlayItemProducer.java:65)
o.j.vcs.spi.VCSNodeOverlayTracker.getOverlays(VCSNodeOverlayTracker.java:288)
o.i.explorer.IconOverlayTracker.processPendingNodes(IconOverlayTracker.java:574)
o.i.explorer.IconOverlayTracker.access$1400(IconOverlayTracker.java:69)
o.i.explorer.IconOverlayTracker$7.run(IconOverlayTracker.java:487)
j.util.TimerThread.mainLoop(Timer.java:512)
j.util.TimerThread.run(Timer.java:462)
I have updated the jdev.conf file to include the following, but still receive the error:
AddVMOption -XX:MaxPermSize=512M
AddVMOption -Xmx512M
AddVMOption -Xms512M
Furthermore, this project opens just fine without issue on a colleague's computer, where the jdev.conf file -XX:MaxPermSize=512M switch is set to 256M and the other 2 switches are not present.
I've spent the afternoon playing with different settings, trying to discover the difference, and I am left stumped. Is there something I'm missing? When I try to bump the setting to higher memory limits, JDeveloper fails to start the Java machine (I suspect that is related to memory allocated to Java itself), though it shouldn't be necessary, as the app works fine on my coworker's computer with half the memory allocated to JDeveloper.
I faced the same issue and it get resolved with the help of below link :
Fixing java.lang.OutOfMemory Java Heap Space error in JDeveloper
Beside changing the configration fieles (jdev.conf and ide.conf) to have the commands
JDEV.CONF
AddVMOption -XX:MaxPermSize=256M
IDE.CONF
AddVMOption -Xmx768M
AddVMOption -Xms256M
See also this link:
Jdeveloper throwing Out of Heap Space error with SVN
Beside, stop versioning option for Jdeverlper as follow:
In JDeveloper -> Choose Versioning menu -> Choose Configure -> Uncheck “Versioning support for Subversion”
You can use some standalone SVN clients such as TortoiseSVN for
versioning
Egh. Simple, REALLY obvious solution that we just somehow overlooked. He is running an older version of JDeveloper. Installed that version, everything works.
I am developing an application with GWT and GAE. When I try to rebuild it or create an artifact I get a lot of errors shown below in the picture.
I searched google and Stack Overflow and I got some answers but not to my particular problem.
From what I understand I get the error because my garbage collector consumes a lot of memory.
here is the main error Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded.
OK, I fixed the problem. just increase the memory that the virtual machine needs to compile the project. Previously it was 128 and now I change it be 512. as my project grown it needed more memory to compile the classes of the project.Here is how to do that in Injtellj IDEA. right click on the project
module -> open module settings -> Modules -> GWT -> compiler maximum heap size (Mb) -> changed to 512.
NOTE: In Ideal Intellij 12+ The project settings is in : File -> Project Structure OR Ctrl+Alrt+Shitf+S
I had encountered the same problem
Exception in thread “main” java.lang.OutOfMemoryError: GC overhead limit exceeded
and when I tried to fix this error it showed the same error. So don't panic and just increase size a little more by setting this option in Run->Run Configurations->Click on arguments->inside VM arguments type
-Xms1024M -Xmx2048M
Xms- for minimum limit
Xmx- for maximum limit
Adio's answer is correct, except that I needed to change it to 1000Mb when we added the "gwt-mobile" library - 512 Mb was still giving me the "GC overhead limit" error. I think 128Mb is a pretty poor default - that didn't work for us even when we began writing our app.
Changing the config through the project properties in netbeans didn't work.
My solution was to edit the nbproject/gwt.properties with:
# Additional JVM arguments for the GWT compiler
gwt.compiler.jvmargs=-Xmx1024M
I tried all the suggestions in a number of posts on the net and none of them worked.
After much experimenting, in the end I found that using the G1GC garbage collector on OSX made a big difference for me. If you are using ANT then you must make sure the build file launches the compiler with the G1GC garbage collector
In NetBeans 8.2 do the following
Right click on Project Name -> Properties -> Google Web Toolkit
Modify JVM Arguments to -Xmx512M
Click Ok
Run again
This work for me on Windows 10, Netbeans 8.2, GWT 2.8.2, JDK 1.8
Sometimes Intellij IDEA crashes for no obvious reason.
First, it becomes quite slow, CTRL + N (class search) often takes a bit longer than usual time to respond when you type something into it, jumping between files takes more time. And then it crashes..
What is the usual route to diagnose Intellij crash? I've been monitoring memory on the status bar when it crashed and it had about 100MB (out of 512MB) left at that time. Are there any useful logs that would point in the direction of the problem?
[UPDATE] 3 crashes in total.
1 instance:
A fatal error has been detected by the Java Runtime Environment:
EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d93acab, pid=3120, tid=5588
JRE version: 6.0_24-b07
Java VM: Java HotSpot(TM) Client VM (19.1-b02 mixed mode windows-x86 )
Problematic frame:
V [jvm.dll+0x9acab]
2 instances:
A fatal error has been detected by the Java Runtime Environment:
java.lang.OutOfMemoryError: requested 32756 bytes for ChunkPool::allocate. Out of swap space?
Internal Error (allocation.cpp:166), pid=2484, tid=5568
Error: ChunkPool::allocate
Memory configuration:
-Xss2m
-Xms32m
-Xmx512m
Increased the memory to -Xmx768, hopefully that will delay the out of memory error by a bit. Increasing the memory to -Xmx1024 caused weird address mapping problems after running IDEA for a while (integer overflow?). The machine has 3GB of RAM.
Intellij wouldnt start up i.e. flashes IntelliJ and crashes.
Fix: Set -Xmx to default 512MB in idea.exe.vmoptions file located in folder C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 14.1.4\bin
How I landed on this issue: I was having Xmx set to 2048MB earlier and it crashed hitting GC limit. Then on IntelliJ wouldn't start.
Please define "crashes". If the window just disappears, it usually means the JVM bug and there will be hs_err_pidXXX.log files in the IDEA working directory (usually IDEA_HOME/bin). In some cases updating JDK to the new version or changing Garbage Collector strategy (via vmoptions file) can workaround such issues.
If the IDE stops responding completely, you need to provide thread dumps.
If it behaves weird, then you need to check idea.log for exceptions. In some cases it can be caused by OutOfMemory issues. Increasing heap size in idea.vmoptions should help. Check the FAQ for IDEA files locations.
If IDEA is becoming very slow on certain operations, you need to provide CPU snapshot.
In addition to the above answer, I added:
-Dswing.noxp=true to .vmoptions file located at IDE_HOME\bin\[bits][.exe].vmoptions
This fixed the problem for me.