问题
I have a VS2010 DB Project migrated form VS2008 and a couple of schema comparisons created.
I get the following error:
Error 1 An error was received from SQL Server while attempting to reverse engineer elements of type Microsoft.Data.Schema.Sql.SchemaModel.ISqlUser: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Error 2 ExecuteReader requires an open and available Connection. The connection's current state is closed.
I am using VS2010 Premium and SQL Server 20008 R2 on my dev machine.
My database is hosted on local instance of SQL server.
When I use the same schema comparision with a remote server and use the sa login it works. On my dev machine, I tried with sa login as well. but no luck!
Has anyone encountered such an issue and was able to resolve?
回答1:
Well cracked it! (not sure if that is the solution, at least it now works for me)
The local databases I was using for schema comparison were restored from backups of production databases. The users in the databases will loose their SID (probably) with the ones mapped on the production server.
I simply deleted the database users and recreated them and the schema comparison started working again.
来源：https://stackoverflow.com/questions/3446854/schema-compare-fails-sql-server-2008-r2-vs2010-premium-with-time-out-expired