The monitor log file ( monitor.log) keeps track of all internal monitor errors such as failed RPC calls as well as recording system starts and stops. The file format is as follows:
92-12-17 12:16:31 User: (S) 6020 DB: /home/lincks/DB monitor 6017 started at obel17 93-02-10 10:44:44 User: (S) 6009 DB: /home/lincks/DB monitor 6009 started at obel17 <UNIX: Invalid argument>
The <UNIX: X> specifies what UNIX error (if any) that has occurred.