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Archives of the TeradataForum
Message Posted: Wed, 20 Nov 2002 @ 21:49:23 GMT
Subj: | | Re: Tactical Queries |
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From: | | Sam Sterling |
Hi Jim,
The NCR/Teradata performance people should be able to help you size it, but in general, it will depend on the query, it's duration, and
the volume of data to be returned. And, of course, it depends on what else is running at the time. Since you mentioned that it's single
amp, I'm assuming that it will be primary index select. You should be easily able to handle 30 or more queries per amp per second (sounds
like OLTP in my book).
1) First, we do a single-AMP RETRIEVE step from
mwdw_prd_qmtbls.sxs_repeat_callers by way of the unique primary
index "mwdw_prd_qmtbls.sxs_repeat_callers.MTN = '2194033732'" with
no residual conditions. The estimated time for this step is 0.03
seconds.
-> The row is sent directly back to the user as the result of
statement 1. The total estimated time is 0.03 seconds.
And, if you use persistent connections, there's no logon time, so with a boatload of sessions, on your configuration, you should be able
to handle all 5000 queries within a second or two - worst case.
Does that help?
Sam
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