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Error: could not create the Java Virtual Machine Can't allocate enough memory to Minecraft server

I have currently been trying to setup a minecraft server on an Intel Nuc that I have it has 8gb of ram this will be important later. I used to be running it on my main desktop and was able to tun it with 4gb of ram allocated to it, that computer had 16gb of ram though. My initial problem was that I could not allocated more than 1500M of ram to it using the following command in a .bat file;
java -Xms2048M -Xmx2048M -jar server.jar
I then decided to run it in command prompt and received the following error.
java -Xmx2048M -Xms2048M -jar server.jar nogui
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
I did some research on the error and found that I might need to add a system variable for.
Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
So I did that and it still didn't work.
Then I decided to install 64bit Java as I did not know if I had it or not and that is when I received the error;
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
So after that i tried to figure out which version I had so I ran the command;
java -version
and received this:
Picked up _JAVA_OPTIONS: -xms512M
Unrecognized option: -xms512M
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Whenever I try to run any Java commands or the server this is what I get and this is after I had removed the system variable.
I am not super knowledgeable about Java and I am just trying to run a minecraft server so if you need any more information please ask.

Thanks for all of the feedback but I got it working it turns out I just needed to restart a few times and uninstall the version of Java I had and get 64-bit Java. Also if your still curious I am running windows on the NUC

Error when starting JBoss EAP-6.3 server with java virtual machine

Hello I have got problem I was reading about some solutions and tried some of them and they helped a little. When i was starting Jboss Developer Studio or Eclipse Luna (32bit) I had error could not create Java Virtual Machine. Then in system environment I added _JAVA_OPTIONS with New Variable Value: -Xmx512M and this helped a bit: Now i can run Jboss Developer Studio and Eclipse but when i Start Server in JBoss Developer studio it still gives error:
Error occurred during initialization of VM
Incompatible minimum and maximum heap sizes specified
Picked up _JAVA_OPTIONS: -Xmx512M
I dont know how to solve it. I was looking for reason in Internet and trid a few more things but they didnt help.
I will be very thankful for every help.
I have repaired it by adding in System Environment Variables
_JAVA_OPTIONS
-Xmx512M -Xms64M -XX:MaxPermSize=512m
And then changing options in \jbdevstudio\runtimes\jboss-eap-6.3\bin
appclient.conf.bat
rem # JVM memory allocation pool parameters - modify as appropriate.
set "JAVA_OPTS=-Xms64M -Xmx512M -XX:MaxPermSize=512M"
Now everything works for me.

I am continuously getting this java.lang.OutOfMemoryError

When I deploy and run my project in netbeans, I am getting this error.. And even after setting up JAVA_OPTS and CATALINA_OPTS in environmental variables as well as in netbeans 'VM options' as -Xms512m -Xmx2048m, I am getting same error.. Please, help me out to sort it out..
Exception in thread "http-bio-8080-exec-2" java.lang.OutOfMemoryError: PermGen space

if you start Tomcat from netbeans the -XX:MaxPerm... must go to server setting not JVM settings (or JAVA_OPTS).
go to sevices tab on the left
expand servers and right click on your tomcat
on the Platform tab, provide the necessary settings under VM options (for example -XX:MaxPermSize=256m -Xmx2048m )

Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine

I am facing this problem since more than a month, here is what I see when I run java on command line:
$ java -Xmx1300m
Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine.
If I run with less memory it works fine
$ java -Xmx1240m Usage: java [-options] class [args...] (to execute a class) or java [-options] -jar jarfile [args...] (to execute a jar file) ..... .....
I spent a week trying to debug this and nothing worked. Finally I had my IT support guys replace the laptop. This happened a month ago on 10/23. Now, after a month, the same problem is back on my new system.
My system configuration is:
Win 7 Enterprise (64-bit), Service Pack 1. Intel(R) Core(TM) i7-2640M
CPU # 2.80GHz 8.00 GB RAM
Java: java version "1.5.0_20" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_20-b02) Java HotSpot(TM) Client VM (build 1.5.0_20-b02, mixed mode)
We are a team of about 30 guys here and I am the only one facing this. All others have almost the same config and working fine for them.
An important observation is Java works fine for some time and then this problem appears once it appears it doesn't go away, even if I re-install java.
I faced this issue the 3rd time after the IT support guys re-imaged by laptop. It worked for a month and now the same problem is back.
Everybody is completely clueless. I have started using 2 laptops now. :-)

Anyway, here is how to fix it:
Go to Start->Control Panel->System->Advanced(tab)->Environment Variables->System Variables->New:
Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
taken from this link

Eureka ! Finally I found a solution on this.
This is caused by Windows update that stops any 32-bit processes from consuming more than 1200 MB on a 64-bit machine. The only way you can repair this is by using the System Restore option on Win 7.
Start >> All Programs >> Accessories >> System Tools >> System Restore.
And then restore to a date on which your Java worked fine. This worked for me. What is surprising here is Windows still pushes system updates under the name of "Critical Updates" even when you disable all windows updates. ^&%)#* Windows :-)

This might also occur if you are running on 64-bit Machine with 32-bit JVM (JDK), switch it to 64-bit JVM. Check your (Right Click on My Computer --> Properties) Control Panel\System and Security\System --> Advanced System Settings -->Advanced Tab--> Environment Variables --> JAVA_HOME...

Thanks.I changed heap space from 2000MB to 1024MB and it worked...

I've just seen this problem myself, Jboss AS7 with jdk1.5.0_09. Update System Property JAVA_HOME to jdk1.7+ to fix (I'm using jdk1.7.0_67).

If your computer is a 64bit, all you need to do is uninstall your Java x86 version and install a 64bit version. I had the same problem and this worked. Nothing further needs to be done.

you can do update the User path as inside
_JAVA_OPTIONS : -Xmx512M
Path : C:\Program Files (x86)\Java\jdk1.8.0_231\bin;C:\Program Files(x86)\Java\jdk1.8.0_231\jre\bin
for now it is working /
/

Sometimes it may happen that you run multiple applications on the same java VM. In Case you have tried all the other solutions described above and it didnt work. Try Running your process by running it on a newly created java VM by passing vmargs
-agentlib:jdwp=transport=dt_socket,server=y,address=10049,suspend=n .
Here address is what the vm takes.

JDeveloper Heap Out of Memory

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.