Fixing Eclipse OutOfMemoryError: Increasing Heap Space for Java Development

  1. Introduction
  2. What is Heap Space?
  3. Increasing Heap Space
  4. Conclusion


If you are a Java developer working with Eclipse, you may have encountered an OutOfMemoryError issue. This error occurs when the Java Virtual Machine (JVM) runs out of memory while running Eclipse. Fortunately, there is a solution to this problem. In this article, we will discuss how to fix the Eclipse OutOfMemoryError issue by increasing the heap space.

What is Heap Space?

Before we dive into the solution, it is important to understand what heap space is. Heap space is a portion of memory used by the JVM to store objects created by Java programs. When the heap space is exhausted, the JVM throws an OutOfMemoryError.

Increasing Heap Space

To increase the heap space in Eclipse, you need to modify the eclipse.ini file. This file is located in the Eclipse installation directory. Here are the steps to follow:

  1. Close Eclipse if it is running.
  2. Navigate to the Eclipse installation directory.
  3. Open the eclipse.ini file in a text editor.
  4. Find the line that starts with -Xmx.
  5. Change the value after -Xmx to a higher number. For example, you can change -Xmx1024m to -Xmx2048m.
  6. Save the file and reopen Eclipse.


If you are experiencing the Eclipse OutOfMemoryError issue, increasing the heap space can help resolve the problem. By following the steps outlined in this article, you can increase the heap space and continue your Java development work in Eclipse without any interruptions.

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