Getting java.lang.OutOfMemoryError : java Heap space on Jboss

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Getting java.lang.OutOfMemoryError : java Heap space on Jboss 7 The entry in jboss configuration is

set "JAVA_OPTS=-Xms1G -Xmx2G -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=2096M"

The Error was

 java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf( [rt.jar:1.8.0_231]
        at java.lang.AbstractStringBuilder.ensureCapacityInternal( [rt.jar:1.8.0_231]
        at java.lang.AbstractStringBuilder.append( [rt.jar:1.8.0_231]
        at java.lang.StringBuffer.append( [rt.jar:1.8.0_231]
        at [rt.jar:1.8.0_231]
        at [rt.jar:1.8.0_231]
        at [rt.jar:1.8.0_231]
        at [rt.jar:1.8.0_231]
        at [rt.jar:1.8.0_231]
        at java.lang.Throwable$WrappedPrintWriter.println( [rt.jar:1.8.0_231]
        at java.lang.Throwable.printEnclosedStackTrace( [rt.jar:1.8.0_231]
        at java.lang.Throwable.printEnclosedStackTrace( [rt.jar:1.8.0_231]

You are encountering OutOfMemoryError: Java heap space,in this case you dont have to increase MetaSpace. I will suggest you to increase heap allocation (Xms3G -Xmx3G). Make sure you have same values for Xms and Xmx. If you still encounter same issue with this then add -XX:+HeapDumpOnOutOfMemoryError option. This option will generate heap dump when OOM error occurs. You can analyze this heap dump through tools like eclipse mat to check which objects consume more memory and if there is any memory leak.

java.lang.OutOfMemoryError: Java heap space while deployed in , If you are getting java. lang. OutOfMemoryError: Java heap space in Eclipse, Netbeans, IntelliJ, Tomcat, JBoss or WebSphere, where you don't have any control on source code, you can simply find there start-up script and can increase value of -Xmx parameter, for example for Eclipse this data is in eclipse. If you are getting java.lang.OutOfMemoryError: Java heap space in Eclipse, Netbeans, IntelliJ, Tomcat, JBoss or WebSphere, where you don't have any control on source code, you can simply find there start-up script and can increase value of -Xmx parameter, for example for Eclipse this data is in eclipse.ini file in vmargs section.

Make sure you have provided enough space in your standalone.conf file inside bin directory

 JAVA_OPTS="-Xms512m -Xmx1024m -XX:MetaspaceSize=512M -XX:MaxMetaspaceSize=1024m"

You should have to increase MaxMetaSpaceSize upto 1024m and MetaspaceSize to 256m hope it will works.

java.lang.OutOfMemoryError: Java heap space : Cause and Solution , This can indicate that the JVM heap size is set too small. INFO [STDOUT] java. lang.OutOfMemoryError: Java heap space. The default maximum heap size of� This project is read only now. Read more.. 4 Replies Latest reply on Jul 18, 2007 10:26 AM by unibrew

Depending on the application deployed on a JBoss, even 2 GB of a heap could be not enough. Potential problems:

  1. Xmx configuration is not applied (configuration is made in a wrong file)
  2. The application just requires more heap
  3. There is a memory leak in the application

If you run JBoss on Windows, set in standalone.conf.bat file in the JAVA_OPTS variable the following values -Xmx2G -XX:MaxMetaspaceSize=1G.

standalone.conf file is ignored on Windows and applied on *nix systems only.

Verify that these values are applied by connecting to the JVM using JConsole (that is a part of JDK) or JVisualVM.

Using these tools you can monitor heap usage and see if more heap is required.

If the heap size is big enough (e.g. 4+ GB) and heap still constantly grows while garbage collection (GC) doesn't free space, probably there is a memory leak.

For analysis add to the JAVA_OPTS the following flags: -Xloggc:gc.log -XX:+PrintGCTimeStamps -XX:+HeapDumpOnOutOfMemoryError.

With these flags JVM will log GC activity into the gc.log file where you can explicitly see how much space is freed after the GC.

If subsequent GC executions according to the log doesn't free any space, probably there is a memory leak and you should analyze a heap dump created manually using JVisualVM or created by JVM itself on OutOfMemoryError. Heap dumps can be analyzed using JVisualVM or Eclipse Memory Analyzer (MAT).

JBoss crashed with out of memory error, how do I prevent this?, JBoss Application server stops accepting incoming requests. OutOfMemoryError: Java heap space ERROR [STDERR] Exception in thread and would like to get some recommendation on heap size parameter setting. Re: java.lang.OutOfMemoryError: Java heap space lgweb Jun 6, 2008 11:46 AM ( in response to lgweb ) this launching jboss outside the IDE Hardware #CPU: 1 OS: Windows XP 5.1 (x86) JVM Environment Free Memory: 19 MB Max Memory: 63 MB Total Memory: 49 MB #Threads: 49 JVM Version: 11.0-b11 (Sun Microsystems Inc.) JVM Name: Java HotSpot(TM) Client VM

java.lang.OutOfMemoryError: OutOfMemoryError usually means that you’re doing something wrong, either configuration issue(where the specified heap size is insufficient for the application) or holding onto objects too long(this prevents the objects from being garbage collected), or trying to process too much data at a time.

Possible Solutions:

1) Try setting "JAVA_OPTS=-Xms1G -Xmx1G -XX:MaxPermSize=256M " to maximum value and restarting your server.

2) Check your code for any memory leak. Use some heap dump reader to check the same. (There are multiple plugins available for IDE's like Eclipse, IntelliJ, etc)

3) Check your code(90% of the times issues are in the code): Check if you are loading excess data from a database or some other source into your heap memory and if it's really required. If you are calling multiple web-services and multiple DB Read-only operations cross-check the db query(If Joins are perfectly used with right where clauses) and amount of data returned from db query and web service.

4) If the issue is due to some recent code change, then try to analyze the same.

5) Also, check if cache and session elements are cleared once used.

6) To be sure if the issue is not due to Jboss, you can run the same code on some other server for testing purpose(Tomcat, Websphere, etc)

7) Check Java documentation for more understanding on Out of memory error: Documentation Link

Java application "java.lang.OutOfMemoryError: Java heap space , JBoss EAP crashes with java.lang.OutOfMemoryError: Java heap space. Solution Verified - Updated October 30 2019 at 10:25 AM -. English. No translations� If you get an OutOfMemoryError with the message “ Java heap space ” (not to be confused with message “ PermGen space “), it simply means the JVM ran out of memory. When it occurs, you basically have 2 options: Solution 1. Allow the JVM to use more memory

Usually, this error is thrown when there is insufficient space to allocate an object in the Java heap. In this case, The garbage collector cannot make space available to accommodate a new object, and the heap cannot be expanded further.

Please do the below possible steps for fixing java.lang.OutOfMemoryError.

Step 1: Check JBoss configuration settings. The setting depends on your system configuration, java version and JBoss version. Check configuration here.

Step 2: Check Heap dump settings here.

Step 3: Java code/ Library problem.

Analyze your memory here And Jboss memory profiler.

Other causes for this OutOfMemoryError message are more complex and are caused by a programming error.

JBoss EAP crashes with java.lang.OutOfMemoryError: Java heap , Have your application debugged. If you get an OOM after a couple hours, then chances are that something is really wrong with it, and you won't fix it by adding� You can set it as JVM arguments the usual way, e.g. -Xms1024m -Xmx2048m for a minimum heap of 1GB and maximum heap of 2GB. JBoss will use the JAVA_OPTS environment variable to include additional JVM arguments, you could specify it in the /bin/run.conf.bat file: set "JAVA_OPTS=%JAVA_OPTS% -Xms1024m -Xmx2048m"

java.lang.OutOfMemoryError: Java heap space, This message indicates that the Java heap size is not enough for the current usage. You can change the maximum heap size by increasing the "-Xmx" value in the file. Please restart your application server for the change to take effect. A better way is to 1) make a heap dump; 2) open the heap dump in Eclipse MAT; 3) look for the duplicated classes; 4) right-click on the most duplicated classes then select "Merge Shortest Paths to GC Roots" with option "exclude weak references". This gives the list of object which prevent the permgen space to be reduced by class unloading.

How to resolve OutOfMemoryError: Java heap space error., A collection of tutorials for Jboss and WildFly on monitoring the application OutOfMemoryError Java heap space error : This exception will be� Our application is throwing "java.lang.OutOfMemoryError: Java heap space" continuously almost after every 2-3 Hours interval(So application start throwing Out of memory heap for hour or so and then again start working normally for next 2-3 hours then again start throwing Out of memory exception). Our Java memory settings are-Xms512m -Xmx1024m

How to solve java.lang.OutOfMemoryError: unable to create new , Hi, I am getting java.lang.OutOfmemoryError java heap space while reading data from database and manipulating it on my program. I load a large resultset which� java.lang.OutOfMemoryError: Java heap space. The most popular one. This is when JVM goes belly up and unable to allocate memory in Heap . Your application might appear hung up and extremely slow to respond to user requests. For example, let’s say your Java application has 2GB of memory maximum (through -Xmx flag).

  • Increase 96m to 1024m
  • What are you doing when that error happens?
  • I am trying to call multiple web-services and and multiple DB Read only operation.
  • Could you please provide more details about the system? is is linux? Which Java version you are running? How much RAM size of your system? Is it VM?
  • Java Version - 1.8, Widnow, RAM-8GB, its is not VM, it's just jboss under windows
  • I allready set it as set "JAVA_OPTS=-Xms1G -Xmx2G -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=2096M"
  • increase further it depends upon lot of factor
  • make sure MetaspaceSize should also be 512m
  • Even for configuration JAVA_OPTS=-Xms1G -Xmx2G -XX:MetaspaceSize=512M -XX:MaxMetaspaceSize=2096M its not working