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venkat · Beginner Joined: 15 Nov 2004 Posts: 20 Topics: 11

Hi,
I have a doubt on class and priority.if the priority is more for a JobA Compared to JobB then JobA will run first.will priority override class even if though it is having higher class

venkat

sunnybunny · Beginner Joined: 30 Nov 2005 Posts: 5 Topics: 2

Hi venkat,

Priority parameter assigns priority to the jobs which are belongs to same class. i.e if the classes are same and priorities are different the highest priority job will executes first.

hope this will helps u.

Cheers,
Sunny.

Phantom · Posted: Wed Dec 07, 2005 4:05 am Post subject:

venkat,

Priority and Class are two different Entities. A set of classes are grouped together under an Initiator - something like a processor executing a bunch of jobs at a time. There are multiple initiators in every mainframe system each executing a set of jobs. If an initiator is overloaded then the jobs running on them will wait for a longer time in queue. This must not be related to Job priority. As sunnybunny said Priority is to place your job at a partiular priority level within the same Class.

Normally, Initiators are classified per the type of job that are executed using them. For example, a set of classes can be dedicated for file transmissions like FTP, NDM, NJE...and another set will be dedicated for DB2 and other such sub-systems and another set for long running jobs (which require more CPU time) etc...

Hope this helps,

Thanks,
Phantom

Vinodch · Posted: Thu Dec 08, 2005 6:22 am Post subject:

Phantom

Thanks for your explanation. If the CLASS parameter is not mentioned in the job, will the default value be assigned by the system if so what is the default value and how can we find the default value in the job ? Question

_________________
Thanks,
Vinod.

kolusu · Posted: Thu Dec 08, 2005 7:33 am Post subject:

Vinodch,

Vinodch,

I suggest that you read this topic entirely which will answer most of your questions

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA2B631/20.7?DT=20030423085347

Hope this helps...

Cheers

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

Phantom · Posted: Thu Dec 08, 2005 7:34 am Post subject:

Vinodch,

"Default Values" varies with Installation. You need to talk to your sys. programmers to find out the default class and its properties (Max. CPU time supported, type of job it supports - like tranmission jobs, tape jobs, database sub-system...).

Hope this helps,

Thanks,
Phantom