CPU utilization high daily at specific time

Hello, All:

One of the iSeries systems in our configuration usually has relatively
low (30-50%) utilization during the early morning.  However, recently we
have had daily occurrences of near 100% utilization (sustained for about
30-45 minutes) at between 5AM and 6AM.  We strongly suspect that this is
the result of some query being issued by a scheduled job on some other
server.  We would like to identify either the job or (Ideally) the SQL
statements that are being executed under these circumstances.
 
This is causing an impact to that system's ability to quickly process
data coming from MQ during that time period, which is a very bad thing
in this case.
 
Can any of you give some idea what we might do to identify the job or
user, and potentially the exact statement that is causing this
performance hit?  Or maybe some other information I need to provide in
order to arrive at an answer?
 
Thank you, 
 
Dennis E. Lovelady
Accenture
 


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