I have Tomcat 7 on my local Windows 7 machine. When I include -Xmx in my catalina.bat file for JAVA_OPTS Tomcat does not start. But runs if it is removed. What could cause this to happen? Is my syntax wrong?
catalina.bat file:
set JAVA_OPTS=-Xms128m –Xmx1024m -XX:PermSize=256m -Djava.rmi.server.hostname=MY_IP
Sometimes it might not function when the memory you specify is more than the available memory allocated to the VM by the environment in which it is running. Inspect the logs to find the specific error/exception being thrown.
Note that the available system memory might not all be available to the JVM regardless of the cap you specify. This depends on other applications that are running. The OS generally has the upper hand on memory allocation.
Also, this answer might help you.
Related
There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 1048576 bytes for AllocateHeap
# An error report file with more information is saved as:
# C:\jboss-eap-services-6.4.4\bin\hs_err_pid6632.log
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m;
support was removed in 8.0
With the problem above, I'm trying to start the jboss server. I tried some steps and I could not find the right solution.
Please use the following setting to allocate the memory for the permanent location -Xms1024m -Xmx1024m -XX:PermSize=512m -XX:MaxPermSize=512m -XX:-UseGCOverheadLimit
You can try to increase eclipse memory, you can do this in le eclipse.ini file (near eclipse executable file) or in the command line arguments :
-Xms256m
-Xmx16348m
It is JBoss (not Eclipse) that is crashing. So increasing Eclipse's memory is futile! (It might make things worse, in fact.)
The second thing to note is that you are running out of space in a native allocation request, so increasing the regular heap's size will not help. Options like the following will probably NOT help! (They might make things worse, in fact.)
-Xms1024m -Xmx1024m -XX:-UseGCOverheadLimit # USELESS
The third thing to note is that your JVM doesn't have a PermGen space, so fiddling with the PermGen size via
-XX:PermSize=512m -XX:MaxPermSize=512m # USELESS
is futile. (That is what Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0 is saying.)
So what is the real problem?
Well you are running a 64-bit JRE, so it is not an architectural problem. (On a 32-bit JRE, the JVM's address space has hard limits ...)
In fact, it is a problem outside of the JVM itself. Basically, the JVM has asked the OS for more memory, and the OS has said "Nope!". I can thing of two possible explanations:
There may be a per-process "ulimit" in place, that is restricting the process size. Your JVM has requested beyond that limit.
The OS may have run out of virtual address space or mappable virtual memory. The former is unlikely. The latter typically arises because your OS doesn't have enough RAM and/or swap space. This can also happen is you are running within a virtual machine that is ... less than generous endowed with memory resources.
Now it appears that this may be happening when the JVM is trying to grow the Java heap. But either way, the problem is not the size of the Java heap.
I've got this version on jruby in Windows 10:
jruby 1.7.13 (1.9.3p392) 2014-06-24 43f133c on Java HotSpot(TM) Client VM 1.7.0_80-b15 [Windows 8-x86]
and when I try to uninstall it from Control Panel I keep on getting the error:
The JVM could not be started. The maximum heap size (-Xmx) might be too large or an antivirus or firewall tool could block the execution.
Any idea what I could try to delete this installation? I tried reinstalling the .exe file, to see if it had an option to remove/repair, but nothing, it just reinstalled it and I still have the problem.
check your environment variables ... you might have JRUBY_OPTS or JAVA_OPTS set.
unset those or adjust the -Xmx setting accordingly.
No commands seem to work for me, at the end I had to do it through a specific software design for this kind of issues: http://www.perfectuninstaller.com/
WildFly 8 is started on a linux server with standalone.sh. I noticed that the server was started with very few heap memory space.
I need to increase the heap memory space for the server and for applications, which are running on the server. How can I do it?
Just edit bin/standalone.conf, look for the first occurrence of JAVA_OPTS and change the -Xmx option according to your needs.
Linux:
bin/standalone.conf
Check for the following line,
JAVA_OPTS
and change it accordingly to suit your heap size needs
-Xms1303m: initial heap size in megabytes
-Xmx1303m: maximum heap size in megabytes
JAVA_OPTS="-Xms1024M -Xmx2048M -XX:MaxPermSize=2048M -XX:MaxHeapSize=2048M"
Windows:
bin/standalone.conf.bat
JAVA_OPTS="-Xms1024M -Xmx2048M -XX:MaxPermSize=2048M -XX:MaxHeapSize=2048M"
Now restart the server and it will work without prompting any heap size errors.
On OS WINDOWS you need to setting standalone.conf.bat
if wildfly 8 is used along with JDK 8,
We need to add MaxMetaSpace Size.
For example,
JAVA_OPTS="$JAVA_OPTS -XX:MaxMetaspaceSize=256M"
As we all know Java 8 does not support Perm gen setting.
For related information, Please check
Wildfly Heap issue
I hope it helps.
I am running Eclipse and changing the 'bin/standalone.conf' didn’t work for me. In this case the solution was oppening the 'Servers' view in Eclipse, double-click the Wildfly server, go to 'Open launch configuation' and do that changes there in 'VM argumments'. Anyway I am a bit noob with Wildfly, I hope other users could contrast my info, I found that in http://www.nailedtothex.org/roller/kyle/entry/articles-wildfly-jvmparams
Its for a Linux server, but I think it could work for windows too.
For managed domain you can set it using heap tag (e.g.<heap size="64m" max-size="512m"/>) within jvm in domain.xml or host.xml (depending on the scope you want to address).
Answer from official documentation:
For a standalone server, you have to pass in the JVM settings either
as command line arguments when executing the
$JBOSS_HOME/bin/standalone.sh script, or by declaring them in
$JBOSS_HOME/bin/standalone.conf. (For Windows users, the script to
execute is %JBOSS_HOME%/bin/standalone.bat while the JVM settings can
be declared in %JBOSS_HOME%/bin/standalone.conf.bat)
** Restart server to make this change effective.
I'm trying to increase value of heap size of my jvm, but it doesn't work. Could anybody help me with this geek problem?
My configuration are follow: Windows 7 x64, 4 GB, i3 CPU
When I try something like -Xmx2000M I have nothing
Where are my errors?
I think you are expecting this.
$ java -Xmx2000M -Xms1000M -XshowSettings:all
VM settings:
Min. Heap Size: 1000.00M
Max. Heap Size: 1.95G
Ergonomics Machine Class: server
Using VM: Java HotSpot(TM) 64-Bit Server VM
Your command is half correct. You need to specify what you want to run with an increased heap size. Something like this
java -Xmx2000M -Xms1000M -jar <jar-file-name>.jar
you need to specify as well which class/jar you want to run. You cannot just increase the heap size per default for all java pplications. Instead you have to edit the command line of the program you are trying to run.
The error you have got in the last screen shot is about unavailability of the class file to run.
You should provide class file which includes main function while running java command.
java -Xmx2000M -Xms1000m MyClass
Considering you have MyClass.class in your classpath.
You need to provide something for JVM to run with these new settings.
The arguments you are using only configure the JVM, it still needs whatever jar or class file you want to run.
To permanently configure JVM profile on windows, follow these Instructions. The settings tool will let you edit runtime parameters:
may be I am late)
But I think you can use it. In IDEA choose Edit Configuration... on drop-down list(look on picture below). And then type in VM Options your parameters -Xmx2000M -Xms1000M.
How to find Edit Configuration on IDEA
According to documentation one could automatically take a heap dump when the application encounters an OutOfMemoryException.
After OutOfMemoryException process just disappear from left menu.
How does this feature works in VisualVM?
Thanks.
C:\work\temp>java -XX:HeapDumpPath=c:/work/temp/file.hprof -XX:+HeapDumpOnOutOfMemoryError -jar example.jar
As far as I know, that option in JVisualVM is equivalent to specifying -XX:+HeapDumpOnOutOfMemoryError as a JVM parameter. This causes the JVM to create a heap dump file when it encounters an OutOfMemoryError. This file can be then loaded into JVisualVM (or into a profiler) and analyzed there. The directory where the file is stored is defined by the -XX:HeapDumpPath parameter.
See also:
Troubleshooting Guide for Java SE 6 with HotSpot VM
Java HotSpot VM Options
StackOverflow: Using HeapDumpOnOutOfMemoryError parameter
Seems application just exited upon OOM. In this case, you must run your app with special -XX params. See "dump" params in JVM documentation. After application dies, you can examine dump in your tool.