Java Could not reserve enough space for object heap error

Question

I have Java7 running on 32-bit Windows and 4 GB RAM  but   java -Xmx4G -Xms4G -jar Minecraft jar  java -Xmx3G -Xms3G -jar Minecraft jar  java -Xmx2G -Xms2G -jar Minecraft jar      still does not work  Error      Error occurred during initialization of VM       Could not reserve enough space for object heap       Error  Could not create the Java Virtual Machine        Error  A fatal exception has occurred  Program will exit      java -Xmx1G -Xms1G -jar Minecraft jar is working  Why

User · Answer

to make sure it runs the 64 bit version of java have it like this:

"c:\Program Files\Java\jre7\bin\java.exe" -Xmx1536M -Xms1536M -XX:MaxPermSize=256M -jar forge-1.6.4-9.11.1.965-universal.jar

take a look at what jre version you have installed just in case.. x64 should be in program files while x32 resides in Program Files (x86)

User · Answer

This was occuring for me and it is such an easy fix    you have to make sure that you have the correct java for your system such as 32bit or 64bit   if you have installed the correct software and it still occurs than goto   control panel  rarr  system  rarr  advanced system settings for Windows 8 or  control panel  rarr  system and security  rarr  system  rarr  advanced system settings for Windows 10  you must goto the  advanced tab  and then click on  Environment Variables   you will click on  New  under the  lt system variables gt  you will create a new variable  Variable name   JAVA OPTIONS  Variable Value  -Xmx512M   At least that is what worked for me

User · Answer

Double click Liferay CE Server -  add -XX MaxHeapSize 512m to Memory args -  Start server  Enjoy     It s work for me

User · Answer

this is what worked for me  yes I was having the same problem   were is says something like java -Xmx3G -Xms3G put java -Xmx1024M so the run bat should look like  java -Xmx1024M -jar craftbukkit jar -o false PAUSE

User · Answer

I had this problem  I solved it with downloading 64x of the Java  Here is the link  http   javadl sun com webapps download AutoDL BundleId 87443

User · Answer

4gb RAM doesn t mean you can use it all for java process  Lots of RAM is needed for system processes  Dont go above 2GB or it will be trouble some   Before starting jvm just check how much RAM is available and then set memory accordingly

User · Answer

If you go thru this IBM link on java  it says that on 32 bit windows the recommended heap size is 1 5 GB and the Maximum heap size is 1 8 GB  So your jvm does not gets initialized for -Xmx2G and above    Also if you go thru this SO answer  clearly the DLL bindings are an issue for memory reservation changing which is no trivial task  Hence what may be recommended is that you go for 64-bit Windows and a 64-bit JVM  while it will chew up more RAM  you will have much more contiguous virtual address space

User · Answer

Go to Start  rarr  Control Panel  rarr  System  rarr  Advanced system settings  rarr  advanced tab   rarr  Environment Variables  rarr  System Variables  rarr  New   Variable name   JAVA OPTIONS Variable value  -Xmx512M

[java] Java Could not reserve enough space for object heap error

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