Close connection of SQLExpress!

Hi,

I write a .NET Windows Form that connect to SQLExpress datafile. After updating data, I want to zip the .mdf file and send email. However, I got an exeption that the .mdf file is used by other thread so I cant zip. Even I try to close all connection, I still cant zip.

Is there any way to detach/unlock .mdf file connecting by SQLExpress?

MA.

Hi,

if you are sure you closed down all conenctions, you can use the sp_detach command to detach the database. if you want to close all connection from the server side first you will have to use the ALTER DATABASE command first and change the state of the database to a SINGLe or admin mode.

HTH, Jens K. Suessmeyer.

http://www.sqlserver2005.de

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Hi,

Unfortunaterly, I dont control the connection but I want to force to close all connection from the client side (using C# code).

MA.

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Hi MA,

Jens is exactly correct, you'll need to force the database into single user mode:

ALTER DATABASE pubs
SET SINGLE_USER
WITH ROLLBACK IMMEDIATE

This will rollback all transactions and then you can detach the database as you like. I'm not sure what you mean you don't control the connections. If you can not connect to the database, then you can not close it's connections and you will not be able to close the connections.

Mike