Java heap space memory leak

Question

I'am solving JVM memory leak,this is what i know so far:

• leak happens in heap space.
• after GC oldGeneration space is not reclaimed, or reclaimed very little.

As you can see old generation space fills you very quickly.

Does anyone knows how which objects allocates memory? Or have some hints how to solve it?

Answer 1

You can try to create a HeapDump (eg via JVisualVM) to check which objects are still referenced. Via Eclipse MAT you can analyze this dump. Only objects which are not referenced any more are automatically removed by the GC.