I record Type 99 write them out during daily dump to a separate GDG and
retain them for 5 days. If you have a problem with WLM it is easier to
have the 99's than not. If I have this type of problem I expect to know
about it soon enough to preserve the data. I equate them to data from a
flight data recorder useful to have in the event of the unexpected. Here
they represent less than 10% of the record volume. MQ, DB2, and CICS
data dwarfs everything else and is constantly growing. If you have
Cheryl Watson's TUNING Letter there was a nice little article "Keeping
WLM Type 99 Records" in the 1998, No. 1 issue.
I agree for many shops it makes sense to turn them off.
Best Regards,
Sam Knutson, GEICO
Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Paul Gillis
Sent: Wednesday, January 18, 2006 2:34 AM
To: [email protected]
Subject: Re: How SMFDUMP works?
Shane Ginnane wrote:
>>Now we only have the problems of the DUMP files in CLOSE PENDING
STATUS.
>
> The
>
>>solved problem was only today's problem, the CLOSE PENDING's one is
>>much older...
>
>
> Did you check that type19 collection was turned off as suggested
> earlier ???.
> Else I'd be suspecting a coding bug - look for LOGREC software records
> about the same time as the switch.
> Check your SMFDUMP and IEFU29 code for errors - maybe time for a code
> update if you've been having this problem for some time.
>
> Shane ...
I would also suppress record type 99. Currently if turned on at one of
my customers, they make up approximately 80% of all SMF records
generated. If you want to work out what SRM is doing, turn them on very
briefly.
I did examine the generation of type 19s a while ago but it was a
reasonably small shop as far as DASD was concerned and the overhead was
not a problem for them.
Paul Gillis
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