The JAMS Monitor, Schedule and Network processes write status 
messages to a log file. This file is named JAMS.LOG and is located in 
the JAMS_DATA: directory. You can use the RENEW LOG_FILE 
command to tell all of the JAMS processes, cluster-wide, to 
close the current log file and open a new one.
At any time, you can check the contents of the JAMS log file 
with the OpenVMS TYPE command.
Normally you do not need to issue this command because the 
JAMS_PURGE job, which runs once a week, renews the log and 
purges the file back to three versions.