Regarding Webapplication In DotNet with c# and sqlserver 2008

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C#

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My problem is that i have a web application in .net on dedicated windows server 2008
with one database sqlserver 2008.

One database name is XYZ with userid aaaaa and password 123456
another database which is connceted above application is also access with same userid and password.


but sometime this application is disconnect with sqlserver again-2 ..
my connection string is this..

add name="ConnectionString" connectionstring="Database=YYY;Server=000.000.000.000;UID=aaaaa ;PWD=123456; pooling=true; Max Pool Size=200;Connect Timeout=200" providername="System.Data.SqlClient"


this problem occur when no of user access one page is increased

What is possible reasion of this problem and please suggest any solution ..




Thanks..