SCO Unix 3.2.4 and Xenix 2.3.x have a number of diagnostics to aid in troubleshooting a malfunctioning system. Most of them are hidden as diagnostic output flags to common commands. Others are just not documented. The following is a list of everything I can find. Omissions are very probable.
Remedial action is left to the system administrator.
First you find, then you fix. This document only points to the diagnostics and does not offer detailed instructions on remedial action. You will need to have root permission to execute most of the following. Items specific to Unix or Xenix are noted in parenthesis. This will give a list of kernel parameters and their normal value.