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Mainframe - How Job Classes are Assigned

This article explains how job classes are assigned on the Mainframe System.

The job class assigned to your job by the system is computed via JES2 exit 6 based upon three factors:

Priority (PRTY= on the //JOB card. We allow 0, 1, or 2);

Time Limit (TIME= on the //JOB card);

Setup: whether or not a job requires Operator intervention for a tape mount (/*SETUP).

Job Class Setup? Priority= Time=
0 No 0 > = 02 seconds
1 No
0 03 - 10 seconds
2 No
0 11 - 60 seconds
3 No
0 < 60 seconds
4
No
1 > = 02 seconds
5 No
1 03 - 10 seconds
6 No
1 11 - 60 seconds
7 No
1 < 60 seconds
8
No
2 > = 02 seconds
9 No
2 03 - 10 seconds
A No
2 11 - 60 seconds
B No
2 < 60 seconds
C
Yes 0 > = 02 seconds
D Yes
0 03 - 10 seconds
E Yes
0 11 - 60 seconds
F Yes
0 < 60 seconds
G Yes
1 > = 02 seconds
H Yes
1 03 - 10 seconds
I Yes
1 11 - 60 seconds
J Yes
1 < 60 seconds
K Yes
2 > = 02 seconds
L Yes
2 03 - 10 seconds
M Yes
2 11 - 60 seconds
N Yes
2 < 60 seconds



Keywords:mainframe "job priority" JES2   Doc ID:19436
Owner:Todd L.Group:University of Chicago
Created:2011-08-02 18:00 CSTUpdated:2014-03-21 11:15 CST
Sites:University of Chicago, University of Chicago - Sandbox
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