Could not create the Java virtual machine.

Error occurred during initialization of VM

Posted by admin on August 24th, 2009

If you are facing following error when restarting the tomcat service or check the java version on the server.

===============================
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
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then you need to increase the java heap size by using following commnad.

Quote:

root@server [/]#export _JAVA_OPTIONS=”-Xms20m -Xmx64m -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:NewSize=10m -XX:MaxNewSize=10m -XX:SurvivorRatio=6 -XX:TargetSurvivorRatio=80 -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled”

Then restart the tomcat service on the server.

If you are facing same problem again and again on the server then add the following code into /etc/profile file.

Quote:

#cPanel Added Limit Protections — BEGIN

#unlimit so we can run the whoami
ulimit -n 4096 -u 14335 -m unlimited -d unlimited -s 8192 -c 1000000 -v unlimited 2>/dev/null

LIMITUSER=$USER
if [ -e "/usr/bin/whoami" ]; then
LIMITUSER=`/usr/bin/whoami`
fi
if [ "$LIMITUSER" != "root" ]; then
ulimit -n 100 -u 20 -m 200000 -d 200000 -s 8192 -c 200000 -v 200000 2>/dev/null
else
ulimit -n 4096 -u 14335 -m unlimited -d unlimited -s 8192 -c 1000000 -v unlimited 2>/dev/null
fi
#cPanel Added Limit Protections — END

Save and exit from the file and then logout from the server and login again and try to check the java -version .