VisualVM unable to sampler memory

Question

I have a tomcat instance with the JMXRemote parameter configured. The local VisualVM is able to get a sampler on CPU, however, not for Memory. The memory button is grayed out wi

Answer 1

Make sure your VirtualVM/JDK is a 32-bit copy if your JRE is. If you are using Eclipse, check the selected JRE on Installed JRE's section.