I'm having trouble tying this 'problem' to a specific z/OS level, but we
discovered in early 2005 that one system in the enterprise was seeing
hugely elongated execution times for some catalog intensive jobs. Like 10 -
20 longer (!) on a massively configured production LPAR vs. even a puny
little sandbox. Diagnostic data--sorry I don't remember the
mechanism--point to GRS.
The one obvious difference was that the problem system was the only full
parallel sysplex *not* using GRS star. This system had been sysplexed some
time earlier in order to debug some DB2 issues, but the 'other' member was
not being IPLed on a regular basis. In other words, a single parallel
sysplex capable system running in practice by itself in GRS ring mode.
Taking the duh! approach, we converted the problem system/sysplex to GRS
star. The GRS delays disappeared immediately, making the system look just
like all the rest.
Just another thing to look at.
.
.
JO.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
[EMAIL PROTECTED]
"Carroll,
William"
<[EMAIL PROTECTED] To
NSURANCE.COM> [email protected]
Sent by: IBM cc
Mainframe
Discussion List Subject
<[EMAIL PROTECTED] Re: Zos 1.7
.EDU>
10/08/2007 12:14
PM
Please respond to
IBM Mainframe
Discussion List
<[EMAIL PROTECTED]
.EDU>
I am 99% sure its within dfsms.. On a catalog report all numbers
Across the board are extremely higher..especially the mvs and bcs allocate.
Bill
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of ITURIEL DO NASCIMENTO NETO
Sent: Monday, October 08, 2007 3:12 PM
To: [email protected]
Subject: RES: Zos 1.7
Are you sure is it a catalog problem ?
What is your main delay reported by RMF ?
Atenciosamente / Regards / Saludos
Ituriel do Nascimento Neto
Banco Bradesco S/A
4254/DPCD Alphaville
Engenharia de Software - Sistemas Operacionais Mainframes
Tel: 55 11 4197-2021 Fax: 55 11 4197-2814
-----Mensagem original-----
De: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] Em nome de
Carroll, William Enviada em: segunda-feira, 8 de outubro de 2007 15:01
Para: [email protected]
Assunto: Zos 1.7
We converted to 1.7 over the weekend, mostly good, but a couple of really
weird problems. Job used to execute in 4 minutes now Takes 20...Only that
one job. A couple of jobs running snap, are taking a bit longer as well.
Is everybody running with the Catalog auto tune on? I am just grabbing at
straws. Any insight or thoughts would be greatly appreciated.
Thank You
Bill Carroll
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
