Try displaying your interactive and QZDASOINIT jobs (selection *OPNF) and look for a large number of repeating open files. This repeating pattern means your CPU is being eaten up.

Could be an application isn't closing a cursor or doing a commit often enough.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Mathew
Sent: Friday, December 14, 2012 9:12 AM
To: Midrange Systems Technical Discussion
Subject: Iseries System Extermely Busy.

Morning All,
For the last few weeks our iSeries system was extermely busy and the processing is very slow.
Can some one please guide me to check the following points in the system.
Increase in the number of interactive transactions Batch jobs.
logical DB I/O's to disk.
Number of SQL jobs processed.
Number of
SQL I/O's to disk.
CPU Batch utilisation
Average transaction rate per hour.
Disk I/O's per second and CPU pool usage.
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