I'm currently developing a tool allowing me to get statistics from anyware simply by going on a website I also created.
For those who don't know, Birt is a reporting tool, and an eclipse plugin.
My problem is the following :
I installed tomcat on the server hosting my website, and installed the Birt ReportEngine on it, and on my website, I call the online viewer to get my reports.
The problem is that since yesterday, when I launch a report, I have this error :
javax.servlet.ServletException: L'exécution de la servlet a lancé une exception
org.eclipse.birt.report.filter.ViewerFilter.doFilter(ViewerFilter.java:68)
Caused by :
java.lang.OutOfMemoryError: PermGen space
I don't really know which config file to modify to avoid this error. I found some examples online that tell to modify the eclipse.ini file, but as for mty website, I don't use eclipse, I didn't found any usefull post.
Can someone help me please ?
Thanks
As said by Thomas, the parameter to set is -XX:MaxPermSize. One way of setting this parameter for Tomcat is to use the CATALINA_OPTS environment variable.
For Windows :
set CATALINA_OPTS=-Xms512m -Xmx512m -XX:MaxPermSize=256m
For Linux (bash) :
export CATALINA_OPTS="-Xms512m -Xmx512m -XX:MaxPermSize=256m"
Check the startup.bat and catalina.bat or startup.sh and catalina.sh files in your tomcat/bin directory and add the above commands there.
(The Xmx and Xms parameters set the minimum and maximum size for the Java heap - where objects are stored. This is not the problem you have but I included them for the sake of completeness.)
You need no add the following line to eclipse.ini
-XX:MaxPermSize=128m
If the problem occurs again try to increase the value. You can also add the following optional lines:
-XX:+UseConcMarkSweepGC
-XX:+CMSClassUnloadingEnabled
-XX:+CMSPermGenSweepingEnabled
-XX:+UseParNewGC
This changes the Garbage Collector of the JVM to a more optimized one, and can also improve the performance and memory usage.
You may also want to tweak the values of the -Xmx and Xms options. Try small increases (same to the -XX:MaxPermSize) as this will increase the memory footprint of your JVM.
For a more explained details see here:
http://www.eclipsezone.com/eclipse/forums/t61618.html
For a complete list of the JVM parameters and options:
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html
Use that JVM option: -XX:MaxPermSize=256m (of course you are free to choose the amount of memory, but IIRC the default would be 64m so you'd need to increase that). - Note that this is for Oracle's JVM (formerly SUN's :) ) , other JVM's might have different options.
Other than that, try not hot deploying too much, since that might also increase the PermGen space usage (JBoss which includes Tomcat as has that problem, but I'm not sure whether that is true for a standalone Tomcat).
This can be solved by allocating more heap memory.
this can be done as:
steps:
double click on your eclipse server->open launch configuration->Arguments->paste this line in vm arguments text area:-
-XX:MaxPermSize=512M -Xmx1024M
This will solve your outofmemory error.
I added the below line line to eclipse.ini and working fine for me.
-startup
plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256m
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
-XX:MaxPermSize=256m
Related
I m using Eclipse Indigo. It becomes unresponsive often and finally prompts saying out of memory error and asks me to exit workbench. I increased the Perm Gen space as told in one of the eclipse forums by editing my eclipse.ini file.
Eclipse.ini file contents now is as below,
-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
-XX:MaxPermSize=256m
-vm C:/Java/jdk1.5.0_15
I mostly do Javascript development in eclipse. And I am not able to edit JS file in eclipse.
What can I do to solve this problem?
Currently maximum only 512MB is allowed for eclipse in your ini (-Xmx512m), if you have enough RAM you shall try increasing it to 1GB. More info here http://wiki.eclipse.org/FAQ_How_do_I_increase_the_heap_size_available_to_Eclipse%3F
This problem may be due to
You are using old java version , You need to upgrade it with new version
If your operation system is 64 bit make sure that you are using 64bit java
Java 5 is pretty old. The GC (and overall optimizations) are slow, outdated and patch level 15 means you're missing many critical bug fixes.
The first step would be to install Java 7 (lastest version). Make sure you disable the browser plugin because of the security risks.
Then make sure that Eclipse uses it: Update the path after -vm. Note: If your path contains spaces, use this:
-vm
c:\Program Files\Java\...
(i.e. put the path into a line of it's own).
Lastly, there are two kinds of memory in Java. Heap and PermGen. The error message tells you which one ran out. Use -Xmx to set heap memory and -XX:MaxPermSize= for PermGen. 256m PermGen should be enough but some script languages need more.
With Java 7, enable GC1 which should give you better performance: -XX:+UseG1GC
If I run my GWT application in eclipse in development mode and click around in the browser for some time, I always get an "out of memory" error in eclipse. My computer has 16 GB Ram, and there is never used more than 8GB.
I tried several config parameters. The VM-arguments in my Run configuration contain these parameters: "-Xms8192m -Xmx8192m"
Even in the eclipse.ini I tested several config parameters and now it looks like this:
--launcher.XXMaxPermSize
8192M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
8192m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms8192m
-Xmx8192m
But I still get the error. Is there any way to prevent this?
If the browser application is throwing the OutOfMemoryError, then you don't need to change the Eclipse settings (eclipse.ini), that's only for Eclipse itself (more memory, usually faster workbench).
To increase an app's memory (any Java app launched from Eclipse), go to the Run/Debug configurations... in the Run menu and set the VM arguments on the Arguments tab of the app's run config:
-Xms128M -Xmx1024M -XX:MaxPermSize=256M
put this in vm arguments in your run configurations:
-Xmx2048M -XX:MaxPermSize=512m
If I run my GWT application in eclipse in development mode and click around in the browser for some time, I always get an "out of memory" error in eclipse.
Not exactly sure what the problem is but I do see some issues with your current arguments.
You have 2 launcher args that are the same. You don't need the 2nd entry of:
--launcher.XXMaxPermSize
8192M
I really doubt that you want 8g of PermSize. Something like 512m is probably much better. You can use jconsole to see how much memory is in the perm space bucket. In the below image taken from jconsole's memory tab, the bar highlighted at the bottom right shows the "Perm Gen" space. Right now it is using 26,906kb (or around 27mb). That's where code goes and it often has to be increased if you have many JSP pages which get compiled as well.
If you run your application with the following params you should be able to connect with jconsole to see how it's doing:
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.authenticate=false
I suspect that you are going to see that you are using far, far less in the "Perm Gen" space. The -Xmx8192m (or -Xmx8g) is all you need typically. It will give 8gb of memory to the heap in general which is typically short lived objects. It also scales the various different memory partitions accordingly.
For more information about various heap spaces see the Java hotspot documentation.
I am getting below error while starting eclipse
An internal error occurred during: "Updating indexes".Java heap space?
It was running fine half an hour before.I restarted the eclipse and getting this error now? i have 8 gb ram,window 7 64 bit OS.
i have tried restarting my system but nothing helped?
-startup
plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.2.R36x_v20101222
-showsplash
org.eclipse.platform
-showLocation
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-vm
C:/Program Files (x86)/Java/jdk1.6.0_25/bin/javaw.exe
-vmargs
-Dfile.encoding=UTF-8
-Dosgi.requiredJavaVersion=1.5
-Xms512m
-Xmx1024m
Not sure what i is the issue?
If you have m2e or other Maven plugin installed, you should check if the option at 'Window -> Preferences -> Maven -> Download repository updates index on startup' is enabled. Disable it and see if it resolves out of memory issue.
If you are using eclipse or myeclipse, you can increase memory by making changes in .ini file (myeclipse.ini)
-Xmx2048m
-XX:MaxPermSize=1024m
-XX:ReservedCodeCacheSize=512m
-Dosgi.nls.warnings=ignore
It will solve problem connected with heap space.
Assuming this is a heap space problem, try this FAQ:
Eclipse-Wiki: FAQ How do I increase the heap size available to Eclipse?
This may not be directly related to the question, but this fixed the java heap issues I had:
Launch eclipse using eclipse -vmargs -Xmx2048m.
From the readme included with the eclipse install:
By default, Eclipse will allocate up to 512 megabytes of Java heap
memory. This should be ample for all typical development tasks.
However, depending on the JRE that you are running, the number of
additional plug-ins you are using, and the number of files you will be
working with, you could conceivably have to increase this amount.
Eclipse allows you to pass arguments directly to the Java VM using the
-vmargs command line argument, which must follow all other Eclipse specific arguments. Thus, to increase the available heap memory, you
would typically use:
eclipse -vmargs -Xmx<memory size>
with the value set to greater than "512M" (512 megabytes
-- the default).
Old question, but I got this issue and adding more memory did not solve, so I rebuilt the java index by applying this comment from eclipse bug tracker:
I Quote:
Click in "Quick Access", Type "Rebuild Java Index" (Actually just start typing it, use the auto completion), Hit enter.
This is frustrating. I'm trying to run a program which loads into memory a 4000x3000 image. It runs fine in Ubuntu but not in Mac, throwing an OutOfMemoryError: Java heap space. Here's my eclipse.ini in Ubuntu
-startup
plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.0.200.v20090520
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
-vmargs
-Xms128m
-Xmx512m
-Dorg.eclipse.equinox.p2.reconciler.dropins.directory=/usr/share/eclipse/dropins
As for Mac
-startup
../../../plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.1.100.v20110502
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vm
/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/bin/java
-vmargs
-Xms128m
-Xmx512m
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
Note that I've tried increasing the PermSize memory Xmx and Xmx of Mac to around 1024m but Mac still throws OutOfMemoryErrors. I only tried making them similar because, well, it runs in Ubuntu just fine.
Any suggestions?
Thanks!
These are your settings for eclipse, not for your program (I'm assuming you're not building it as an Eclipse component). Your program will run with the default settings unless you specify differently in your Run configuration.
The defaults java starts with depend on multile factors, like architecture, OS, and available RAM. So it's entirely possible that it would start with a lower memory limit on your mac.
To fix this, set Xmx to be the same on both systems (Also make sure they're on the same architecture, 64 bit apps might require more memory to do the same thing).
First, your error is about heap space, so changing Perm space isn't going to affect it.
Second, as Joeri pointed out, the eclipse.ini file affects how Eclipse itself runs, not programs that you write and run from inside Eclipse.
On your Launch Configuration, go to the Arguments tab and enter the -Xmx argument in the box labeled VM Arguments.
If you know for certain that you always want all your Launch Configurations to run with certain heap space arguments, you can assign them to the JRE. Open Eclipse Preferences and find Java > Installed JREs. From there, select the JRE that you want to work with, click the Edit button, and there you'll find a Default Vm Arguments field. If you set -Xmx there (or any other JVM arguments), they will affect any Launch Configuration that uses that JRE.
Increase the value of -Xmx parameter
I have a problem with error saying ERROR: 'Java heap space'. I followed these instructions to increase the heap size for Eclipse, but it doesn't work. Eclipse seems to be ignoring the given values. My eclipse.ini file looks like this:
-startup
../../../plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.1.R36x_v20100810
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XX:MaxPermSize=512m
-Xms512m
-Xmx1024m
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.ecli
pse.swt.internal.carbon.smallFonts
The Eclipse version is 3.6.1 running on Mac.
Any ideas what might be wrong?
Are you sure you are configuring parameters for your application execution and not for Eclipse itself?
I usually configure heap size in the Run | Run Configuration dialog.
Try to supply -vmargs directly to Eclipse executable instead of eclipse.ini file.
eclipse -vmargs -Xms512m -Xmx730m
There is a bug in Eclipse, that prevents it from supplying "vmargs" clause of eclipse.ini to JVM.
Humm... -XX:MaxPermSize=512m -Xms512m -Xmx1024m all looking fine. When are you having this error?
At Startup? Can you try switching JVM or downloading the 32 bit version?
When building? Try this guide to give ANT more memory: http://ericfickes.com/2008/10/osx-flexbuilder-java-heap-space-error/
On the App Server / Servlet Container? Increase it's heapsize and permgen space.
Eclipse.ini is for eclipse itself not for running applications. For that use a run configuration to set the start parameters.
One more note: java on MacOSX doesn't have the XX:MaxPermSize or any another XX flags.
To those who get the same error under Eclipse, try to restore cache files (if they were removed accidentally in WAR folder ), this way I solve the same problem under my Eclipse' project. note: I don't think there is a link between Memory allowed to Eclipse and memory for App.