Are there traces of JVM work left for subsequent analysis in case of application failure?

Yes, JVM leaves various artifacts for subsequent analysis in case of application failure. For example:

• Heap dump — a snapshot of memory state that can be analyzed to find leaks or memory issues.
• Thread dump — information about the state of all threads at the moment of failure.
• Error log (hs_err_pid.log) — a file with detailed information about the JVM crash, including stack traces, thread states, library versions, etc.

These data help developers and administrators understand the causes of crashes and fix errors.