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Connection Problem cause by Change Computer Name

Posted on 2009-07-06
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Last Modified: 2012-05-07
Hi,

I have a server let's say "Server". The connection is doing fine, until some change it to "Server01".

Could we solve this problem by not changing the computer name back ?

Thank you.

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Question by:emi_sastra
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pssandhu earned 2000 total points
ID: 24786822
Can you not update your connection string with the new server name?
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by:emi_sastra
ID: 24786850
Hi pssandhu,

I could recompile my application, not problem with that.
How about the data? It is gone,  I mean how to attach the data to the new instance and the new sql server instance (new computer name) is not there yet.

Thank you.
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Expert Comment

by:pssandhu
ID: 24786978
Has the SQL Server instance name changed as well? If all that was done was to change the server name then the defaul or named sql server name will not change.
Are you running into errors when you change your connection string?
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by:emi_sastra
ID: 24786988
-Has the SQL Server instance name changed as well?
Not yet.

Are you running into errors when you change your connection string?
Yes, since there is no database there.

Thank you.
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by:pssandhu
ID: 24787037
<<Yes, since there is no database there.>>
So it's a new server then? If the server was renamed then the database shouldn't disappear or get deleted. If there is no database then either it must be a new server/machine or the target machine has been rebult.
Sorry but I am missing something obvious here?
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by:emi_sastra
ID: 24787127
-So it's a new server then?
No, it is not.

-If the server was renamed then the database shouldn't disappear or get deleted.
Yes, its still there on HD folder.

Are you running into errors when you change your connection string?
Yes, and I should say since the sql instance name is not the same as the computer name (still "server").

Because the servername = "ComputerName\SQLEXPRESS", when the computer name is changed then will get exception when try to connect it.

Thank you.
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Author Comment

by:emi_sastra
ID: 24787282
I just tried to rename my computer, restart it.

Now, I can't even use SQL Management to see the database.

Thank you.
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Author Comment

by:emi_sastra
ID: 24787334
I could access it using browse.
Does it mean that when I change my computer name then the Windows change the sql instance also like:

Server\SQLEXPRESS to Server01\SQLEXPRESS

What I need just recompile my app using Server01\SQLEXPRESS as connection string?

Thank you.
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Author Comment

by:emi_sastra
ID: 24787429
Hi pssandhu,

I get it now.
I seems like it is new feature of SQL 2005, rename SQL instance automatically when computer name is renamed.
It does not behave like that in SQL 7.

Thanks for the discussion.
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by:pssandhu
ID: 24787448
Oh, cool. I was just testing the theory. Awesome!
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