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navhin

hi

may i know the difference between the following terms in CA7

triggered jobs and successor jobs

triggered by jobs and dependent jobs Rolling Eyes

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navhin

kolusu · Posted: Mon Mar 26, 2007 8:10 am Post subject:

navhin,

Triggered Jobs :

ex: There are 3 jobs in the systems.

expat · Posted: Mon Mar 26, 2007 8:29 am Post subject:

Using Kolusu's example above,

JOBA may be triggered by either an external event, e.g. the creation of a dataset, or may be triggered by the scheduled start time of the job.
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Nic Clouston · Posted: Mon Mar 26, 2007 9:50 am Post subject:

Semantics time - To me, a trigger would be one of, but not exclusively, the events mentioned by expat. I would not say that JOBA triggers JOBB. I would take this to mean that JOBA either submits or releases JOBB whereas, in reality (probably), JOBA just finishes and JOBB is then submitted by the Job Scheduler. JOBA is a predecessor to JOBB which is a successor to JOBA.

JOBE would be fully described as dependent on JOBD as well as JOBB. If it is not dependent on JOBD what is it doing in that jobstream?
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kolusu · Posted: Mon Mar 26, 2007 10:06 am Post subject:

navhin · Posted: Mon Mar 26, 2007 11:46 pm Post subject:

i think i am getting an idea......thanks

let me have some more clarification.

if job a triggers job B , then it does'nt imply that the output of job A will be used by job B as input.

but job E is a successor of job B, then the output of job B will be used by job E.

Am i getting it right?
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navhin

Nic Clouston · Posted: Tue Mar 27, 2007 3:22 am Post subject:

If a job is dependent on another job (B on A in this case) then there SHOULD be a dependency on some sort of data between the two otherwise why hold up job B?
BUT it is common practice to have a start and/or end job which would be an IEFBR14 - or even a dummy 'job' to provide a convenient 'link' point between applications or 'hold' point if a set of jobs need to be held for some reason.
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Utility and Program control cards are NOT, repeat NOT, JCL.

navhin · Posted: Tue Mar 27, 2007 5:16 am Post subject:

nic clouston,

I am actually asking for the difference between trigger and dependency.
if both are same then the value in triggered job , successor job and dependant job fields should be the same jobs.

when viewed in CA7, it is actually not and they have different job names in the respective fields.
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navhin

Nic Clouston · Posted: Tue Mar 27, 2007 5:33 am Post subject:

A trigger is something that fires something else off - the completion of JOBA triggers (sets off) JOBB.

A dependency is a 'physical' relationship eg JOB X creates a file which JOB Y needs so JOB Y is dependent on JOB X. This is also known as a predecessor/successor relationship - JOB X is a predecessor to JOB Y. In turn, JOB Y is dependent on JOB X. Also, in this case, when JOB X finishes that completion triggers the submission of JOB Y.
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Utility and Program control cards are NOT, repeat NOT, JCL.

navhin · Posted: Tue Mar 27, 2007 8:00 am Post subject:

nic clouston,

so job A need not necessarily give any file to job B.
triggering is upto scheduler level only.
is it?
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navhin

kolusu · Posted: Tue Mar 27, 2007 8:06 am Post subject: