General debugging techniques

This section provides a guide to the diagnostic tools and Linux® commands that can be useful when you are diagnosing problems that occur with the Linux JVM.

There are several diagnostic tools available with the JVM to help diagnose problems:

Starting Java dumps, see Using Javadumps in the J9 VM reference.
Starting heap dumps, see Using Heapdumps in the J9 VM reference.
Starting system dumps, see Dump viewer in the OpenJ9 user documentation.

Linux provides various commands and tools that can be useful in diagnosing problems.