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EXCP in JESMSGLG v.s. SMF type 30

 
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jervislee

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Joined: 25 Feb 2009
Posts: 3
Location: Taiwan

PostPosted: Mon Mar 02, 2009 8:38 am    Post subject: EXCP in JESMSGLG v.s. SMF type 30
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hi everyone,
I'm new here and new to mainframe.
Happy to join you.

I'm working on IO measurement for datasets used in my job.
To do that, I collect SMF30BLK and SMF30DCT data from EXCP section of type 30 record.
Meantime, I can have total EXCP info. from JESMSGLG.

In my imagination, since SMF contains data for all datasets, I can sum them up and
the sum should be equal to the value I get from JESMSGLG.
However, the EXCP info. from JESMSGLG is different from the sum of my collected SMF30BLK for all DD, either the sum of SMF30DCT. icon_eek.gif
Can someone please tell me what's wrong in my thought?
Are they different things in JESMSGLG and SMF type 30?

Thanks for your time and reply in advance.
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gcicchet

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Joined: 28 Jul 2006
Posts: 1703
Location: Australia

PostPosted: Mon Mar 02, 2009 10:13 am    Post subject:
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Hi,

if you compare each step from the JESMSGLG to the SMF records, is the EXCP information the same ?

When I compare one of my jobs, step by step, the information is the same.

Gerry
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jervislee

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Joined: 25 Feb 2009
Posts: 3
Location: Taiwan

PostPosted: Mon Mar 02, 2009 11:45 am    Post subject:
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hi Gerry

Can you tell me which SMF field you compare to JESMSGLG?
I compare SMF30BLK and SMF30DCT to JESMSGLG and get no luck.
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gcicchet

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Joined: 28 Jul 2006
Posts: 1703
Location: Australia

PostPosted: Mon Mar 02, 2009 2:49 pm    Post subject:
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Hi,

I extracted type 60 records for a job I had run ealier. using FILEAID I was able to view the extracted records and in pos 405 for 2 bytes, the excp count matched the excp count from the steps in my job.


Gerry
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Robert Sample

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Joined: 06 Jun 2008
Posts: 8165
Location: East Dubuque, Illinois, USA

PostPosted: Mon Mar 02, 2009 8:42 pm    Post subject:
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Jervis: SMF 30 records can be collected for intervals; you need to restrict yourself to the subtype 4 (step termination) or subtype 5 (job termination) records. IIRC, the interval counts are included in the subtype 4 and 5 counts (but you might want to verify that yourself).
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jervislee

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Joined: 25 Feb 2009
Posts: 3
Location: Taiwan

PostPosted: Tue Mar 03, 2009 7:45 am    Post subject:
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TANSTAAFL:

I'm collecting subtype 4 & 5 of SMF30 to compare with JESMSGLG and they don't match. icon_sad.gif So that makes me think what's the difference between them on EXCP.
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