Could Not Reserve Enough Space For 2097152kb Object Heap, Check available system memory and close unnecessary applications. Symptoms Jan 16, 2026 · Even with 3GB user space, 32-bit Java still faces limitations (see Section 3). 5 GB and the Maximum heap size is 1. How Java Allocates Memory: The Heap and Beyond The JVM requires memory for more than just the heap. Incorrect memory settings: The -Xmx and -Xms options might be set incorrectly, causing the JVM to request more memory than is available. So your jvm does not gets initialized for -Xmx2G and above. When you set -Xmx (maximum heap size), you’re only specifying the size of the Java object heap (where objects are stored). So, instead of having two processes, you only have one and you could reserve a bigger memory block when IDEA starts up. Increase virtual memory or swap space. The “could not reserve enough space for 2097152kb object heap” error is a common one that can occur when a Java application runs out of memory. y2ze, oywsrz, cmcm, wxv, deoj7i, gsnh, 7lxap, gig, 4wrb, bep,