As an optional post-installation step, Oracle recommends that you also install and configure diagnostics tools on all Oracle VM Servers. These tools can be used to help debug and diagnose issues such as system crashes, hanging, unscheduled reboots, and OCFS2 cluster errors. The output from these tools can be used by Oracle Support and can significantly improve resolution and response times. See Installing Oracle VM Server Diagnostic Tools in the Oracle VM Administrator's Guide guide for information on installing the diagnostic and support tools.