Jim,
< (no autotune !!!!)
Why
Paul
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Monday, December 03, 2018 10:07 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: DB2 Symmetric Multiprocessing (option 26 of 5770SS1) Was: Performance tuning
Rob:
Clearly that LPP only helps with SQL, not so much Record Level Access.
Secondly proper indexing etc. must be done. Most critically however is the
partition needs to have more than one core assigned to it.
System values need to be set to enable it (QQRYDEGREE for example)
The query attributes need to be set to use it, be they set from the QAQQINI,
"Set current Degree" or other methods.
Now index creation can now be parallel, query execution will be broken up
into parts
Furthermore, it's not a set and forget product. Periodically the query
attributes need to be reviewed, index creation reviewed, and more
importantly update the work management as needed. (no autotune !!!!)
You won't belielive how many systems I look at where that product is
installed and at least one of the above is not done.
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Monday, December 03, 2018 8:21 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: DB2 Symmetric Multiprocessing (option 26 of 5770SS1) Was:
Performance tuning
<snip>
We include it in most every upgrade if we can. The other one we like to
include is DB2 Symmetric Multiprocessing (option 26 of 5770SS1) when there
are more than two cores on the system. That's another LPP that really helps
when utilized properly.
</snip>
I'm interested in further comments about <snip> when utilized properly
</snip>
Rob Berendt
--
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