Solving : java heap space error Increase Java Heap size in Java Note: String Pool is also a part of Java Heap Memory. Java Stack memory is used for the execution of a thread. Whenever we create an object, it’s always created in the Heap space. If such an event occurs then an OutOfMemoryError is thrown. GC Overhead limit exceeded- This error indicates that the garbage collector is running all the time and the Java program is making very slow progress. Sometimes, it indicates a problem that’s out of our control, such as a third-party library that caches strings, or an application server that doesn’t clean up after deploys. OutOfMemoryError usually means that we’re doing something wrong, either holding onto objects too long or trying to process too much data at a time. Generally, bad programming results in OutOfMemoryError. Over time the leaked objects consume all of the available heap space and trigger the already familiar OutOfMemoryError.Įxception in thread “main” : java heap space Exception in thread 'main' What is causing it? Every time the leaking functionality of the application is used it leaves some objects behind in the Java heap space. Memory leaks- A particular type of programming error will lead your application to constantly consume more memory.The operation which functioned normally before the spike ceases to operate and triggers the OutOfMemoryError. When the number of users or the volume of data suddenly spikes and crosses the expected limit. Spikes in usage/data volume- The application was designed to handle a certain amount of users or a certain amount of data.In other words, the application just requires more Java heap space than available to it to operate normally.

If we try to fit a large application into a smaller space. There most common reason for this error is simple –

Memory space in the JDK 8 release Understanding OutOfMemoryError in Java

Dbeaver java heap space