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GTF ENQ/DEQ SVC Trace for SYSZVOLS and SYSDSN on z/OS V1.12
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Minoru Massaki  
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 More options Nov 12 2012, 10:42 am
Newsgroups: bit.listserv.ibm-main
From: mmass...@GMAIL.COM (Minoru Massaki)
Date: 12 Nov 2012 07:42:43 -0800
Local: Mon, Nov 12 2012 10:42 am
Subject: GTF ENQ/DEQ SVC Trace for SYSZVOLS and SYSDSN on z/OS V1.12
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Hello there,

I took GTF ENQ/DEQ SVC Trace, but there was no SYSZVOLS/SYSDSN trace
entry in IPCS print output even though D GRS,C indicated there were
resource contentions for SYSZVOLS and SYSDSN.  (Other ENQ/DEQ entries
were printed)

GTF Trace parameters are following. (SVC48: DEQ, SVC56:ENQ)

TRACE=SSCHP,IOP,CCWP,SVCP
SSCH=IO=(5F0)
SVC=(19,20,31,35,37,48,56)
CCW=(SI,CCWN=512,DATA=128,IOSB)

I took same GTF SVC trace on old z/OS V1.7 system.
There were many SYSZVOLS, SYSDSN trace entries in IPCS print output.

How can I trece SYSZVOLS/SYSDSN ENQ/DEQ activities in z/OS V1.12.

Is this bug or some code changes SVC trace for ENQ/DEQ?

Your help would be appreciated.
--

全先　実  -  Minoru Massaki  (M*M)
E-mail: mmass...@gmail.com

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Jim Mulder  
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 More options Nov 13 2012, 12:16 am
Newsgroups: bit.listserv.ibm-main
From: d10j...@US.IBM.COM (Jim Mulder)
Date: 12 Nov 2012 21:16:04 -0800
Local: Tues, Nov 13 2012 12:16 am
Subject: Re: GTF ENQ/DEQ SVC Trace for SYSZVOLS and SYSDSN on z/OS V1.12
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  Probably some code changed to use ISGENQ instead of ENQ/DEQ.
ISGENQ uses PC interface into GRS, so it is not traceable
via a GTF SVC trace.  A SYSGRS  component trace, using
the REQUEST0 and REQUEST1 options, might provide the tracing you
desire.

Jim Mulder   z/OS System Test   IBM Corp.  Poughkeepsie,  NY

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Minoru Massaki  
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 More options Nov 18 2012, 11:00 am
Newsgroups: bit.listserv.ibm-main
From: mmass...@GMAIL.COM (Minoru Massaki)
Date: 18 Nov 2012 08:00:20 -0800
Local: Sun, Nov 18 2012 11:00 am
Subject: Re: GTF ENQ/DEQ SVC Trace for SYSZVOLS and SYSDSN on z/OS V1.12
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Hi Mulder-san,

Thank you very much for your information.

The code change had been made in z/OS V1.10.
After that release, we cannot trace ENQ/DEQ by GTF SVC trace.

I'm going to try to trace it by component trace you suggested.

Again, thank you a lot.

Minoru Massaki  (M*M)

2012/11/13 Jim Mulder <d10j...@us.ibm.com>:

--

全先　実  -  Minoru Massaki  (M*M)
E-mail: mmass...@gmail.com

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