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sql server (microsoft) : What is Causing a Sudden Increase in User Connections?



rob
1/15/2007 12:14:04 PM
A few times a day we get a dramatic increase in the number of user
connections on our database (sometimes 4 to 5 times as many according
to perfmon). Here is some additional information...

- from the time the number of connections starts to increase to the
time it drops back down to a "normal" level can take anywhere between 1
minute and 60 minutes
- the increase usually occurs rather quickly and drops off slowly
- we've checked for blocking, and none occurs during these sudden
increases
- we've ran profiler, and it seems like the average duration of queries
during these periods are no different then at other times of the day

Any ideas how we can find out what is causing this sudden increase in
user connections? Your help is greatly appreciated.
Steve
1/17/2007 8:40:59 AM

[quoted text, click to view]

To ask the obvious did you look at the list of connected users to see
which users were making the increased connections? I have seen
applications create many, sometimes over 100 connections, in a short
period of time. This can be caused by inefficient connection coding
within the app.
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