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SQL Timeout period expired adding column to table

I am trying to add a column to an existing (very large) table.  I am doing this in SQL SERVER MANAGEMENT STUDIO.  I get the following message:

'Items' table
- Unable to modify table.  
Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.

How can I extend the timeout so this can complete???  I would like to do this in Management Studio if I can.

1 Solution
If your database is getting a lot of activity (via web server or the like) the table modification is going wait for those to run.  You can take your database offline (stopping all of those connection) and then restart it.  That should give you a few seconds to run your modification script.

MGothelfAuthor Commented:
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