SQL Server instance port connection string

Posted on 2007-11-27
Last Modified: 2008-02-01
What's the format that server, instance, and port have to appear in a sql server connection string?

Question by:gromul
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LVL 25

Expert Comment

ID: 20362386
Provider=SQLOLEDB.1;Password=xxxx;Persist Security Info=True;User ID=xxxxx;Initial Catalog=mydbname;Data Source=servername\instance
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Expert Comment

ID: 20362393
If you want to connect on a non-standard port, you'll have to do that by creating a SQL alias in SQL Server Client Network Utility (Start->Run->CliConfg.exe),
and setting the port number there

Author Comment

ID: 20362427
Could I do something like this?

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LVL 25

Expert Comment

ID: 20362555
what application or IDE are you using?

Author Comment

ID: 20362782
I want to set up a connection string from C# code.
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Accepted Solution

imitchie earned 500 total points
ID: 20362803
then yup, DataSource=servername\instance,port is right

Provider=SQLOLEDB.1;Password=xxxx;Persist Security Info=True;User ID=xxxxx;Initial Catalog=mydbname;Data Source=servername\instance,port;
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 20363503
note: unless your sql server has been changed to use the non-default port, you can leave the port information out of the connection string.
only in an environment where the sql server port has been changed for security it must be specified...

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