How To Solve The Error “Could Not Reserve Enough Space For 2097152kb Object Heap”

Posted on by Thomas Valen
Could not reserve enough space for 2097152kb object heap

There are some ways to help you fix the error “Could not reserve enough space for 2097152kb object heap”. Let’s learn about it with the explanation and examples below.

How does the error “could not reserve enough space for 2097152kb object heap” happen?

What is the heap in Java?

The area of memory used to store objects built by JVM-based applications is known as the Java heap.

Heap memory is the memory used at runtime (when the program is running) to store Objects. Whenever anywhere in your program, when you create an Object, it will be stored in the heap (execute the new operator).

The usage of the heap will increase or decrease depending on the Objects used.

The heap is a dynamically allocated memory for objects. The heap manager controls how this memory is organized. When an object is no longer needed, a garbage collection procedure executes to free the memory so it can be reused. Before an object is disposed of, the finalized method of the object is executed. However, there is no guarantee that this method will be executed when the program terminates without performing a garbage collection procedure.

To learn more about Java Heap Space, click here.

The reasons make this error occur:

Reason 1: The Java JRE version is incorrect.

You may download the incorrect Java JRE version.

Reason 2: Did not specify the heap size.

This error may occur when you specify a large heap size. Contiguous free space in memory may not have enough.

Some solutions to fix this error

Solution 1: Install the 64-bit version

You should install the 64-bit version to fix this issue.

Solution 2: Run Java with lower heap size

To solve this error, let’s run Java with lower heap size.

Let’s see the solution below.

java -Xmx512M MyApplication

Solution 3: Add a new System Variable

This error may occur when you specify a larger heap size than physical memory. In this case, you have to add a new System Variable. Let’s follow these steps to do that:

Step 1: Let’s hold Windows and R. Next, type “control” and OK to run the open Windows.

Step 2: Click on “System and Security”, then click “System”

Step 3: Click on “Advanced system settings”

Step 4: Click on “Environmental Variables” then click “New”

Step 5: Type this content and click “OK”

Name: _JAVA_OPTIONS

Value: –Xmx512M

Solution 4: Redownload Java

Redownload Java here if you are download the incorrect Java JRE version.

Summary

Some reasons make the error “Could Not Reserve Enough Space For 2097152kb Object Heap” we mentioned above. And some solutions that can help you to solve it. Choose the solution that is the best for you. We hope this tutorial is helpful to you. Thanks!

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