Eclipse Memory Analyzer: Unable to attach to 32-bit process

Question

when trying to acquire a Heapdump of my eclispe rcp application with the Java Memory Analayzer I get the following error message:

Error creating heap dump. jmap exit code = 1
4120: Unable to attach to 32-bit process running under WOW64
The -F option can be used when the target process is not responding

OS: 64bit Windows7

Java Memory Analyzer: 64bit

Application: 32bit

I tried the 32 and the 64 bit variation and got the same error.

Cans oemone tell me what the problem is?

Answer 1

This means that the jmap you are using is the one that is bundled with the 64 bit version of the JDK. If you are using this jmap to acquire a heap dump from a 32 bit JVM, then this error pops up.

Solution : Use the version of jmap that is bundled with the 32 bit JDK.