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Título
Not all SQL Servers are listed when clicking the dropdown menu -
Descripción
Not all SQL Servers are listed when clicking the dropdown menu to add SQL Servers to a new discovery.
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Causa
To obtain a list of SQL servers we use the Microsoft API SmoApplication.EnumAvailableSqlServers:
http://technet.microsoft.com/en-us/library/ms210350.aspx?cs-save-lang=1&cs-lang=jscript#code-snippet-1
This call sends out a UDP broadcast on the network with a timeout to obtain a list in a relatively small amount of time. -
Resolución
Common reasons this may not return a server is if the SQL Browser service is disabled (on the remote server), if the server is marked as hidden (http://technet.microsoft.com/en-us/library/ms179327.aspx) , or if the TCP port 1433 or UDP 1434 (Browser Service) is blocked.