Java – “Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G

eclipsejavajvmjvm-arguments

First of all, I have a box with 8gb of ram, so I doubt total memory is the issue.
This application is running fine on machines with 6gb or less.

I am trying to reserve 3GB of space using -Xmx3G under "VM Arguments" in Run Configurations in Eclipse.

Every time I try to reserve more than 1500mb, I get this error:
“Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G

What is going on here?

Best Answer

Could it be that you're using a 32-bit jvm on that machine?

Related Solutions

Java – Could not reserve enough space for object heap

Run the JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)

Java – How to resolve this : “Error occurred during initialization of VM; Could not reserve enough space for object heap”

Try changing the memory settings of the VM. see here how to pass this as command-line arguments. For example

java -Xmx512m -Xms256m ....

If, however, your machines does not have enough RAM to handle this, the only resolution is to buy more RAM. It might still be possible to make it run with tweaking the above settings - I once spent half an hour trying to run an application with a limited amount of RAM by experimenting with different values for Xmx and MaxPermSize.

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Java – Could not reserve enough space for object heap

Java – How to resolve this : “Error occurred during initialization of VM; Could not reserve enough space for object heap”

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