August 2012
Intermediate to advanced
452 pages
15h 41m
English
book
Optimizing DB2 Queries with IBM DB2 Analytics Accelerator for z/OS
by Paolo Bruni, Patric Becker, Willie Favero, Ravikumar Kalyanasundaram, Andrew Keenan, Steffen Knoll, Nin Lei, Cristian Molaro, P S Prem
Content preview from Optimizing DB2 Queries with IBM DB2 Analytics Accelerator for z/OS
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196 Optimizing DB2 Queries with IBM DB2 Analytics Accelerator for z/OS
8.5 Reaching the limit of 100 concurrent queries
The maximum level of concurrency is 100 queries in the DB2 Analytics Accelerator. Not all of
them can be executed concurrently by the Netezza appliance, and the DB2 Analytics
Accelerator queues them until they can be executed. Queuing increases the total response
time. WLM dispatching priorities are not honored in the DB2 Analytics Accelerator, so the
elongation of the response affects all queries independent of their requester’s priorities.
If many subsystem are connecting to the same DB2 Analytics Accelerator, for instance ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.