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Archives of the TeradataForum
Message Posted: Tue, 26 Jun 2012 @ 09:43:19 GMT
| Subj: | | Re: Explain Plan differences between Static and Dynamic SQL |
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| From: | | Mark Young |
Asifuddin Md wrote:
| | Also note the DBSControl/cost profile(if being used) settings do come into play. If you are to compare an earlier version to this - please
see, if anything can be tuned in here as well. | |
Hi,
I noticed your comment about cost profiles and was wondering if you have more detail on the impact of differences. We have just upgraded our
Production system from a 5500H running 13.01 to a 6650H running 13.10 and I did notice that they have a different value in the cost profile
setting but was not sure if it needed to match or not. We seem to be experiencing a lot more skewing issues on the new system and while our
benchmark tests ran better on the new system, we are seeing some queries run significantly worse.
Mark
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