问题
I am using Microsoft SQL Server Management Studio. I have two databases one is the system database, which has the master database and the other one is my database called CCTNS_CAS_DE_DB. When I am trying to generate the reports through the tool which uses the CCTNS_CAS_DE_DB database.
I get the following error:
Cannot resolve the collation conflict between "Latin1_General_CI_AI" and "SQL_Latin1_General_CP1_CI_AS" in the equal to operation
I went through the SQL Server and checked the properties of the master database it shows the collation as Latin1_General_CI_AI but when I went to the properties of the CCTNS_CAS_DE_DB database it shows the collation as SQL_Latin1_General_CP1_CI_AS.
I searched for the error online but most of the solution tell how to change the collation of a particular table but I didn't come across any query which will change the collation my database to Latin1_General_CI_AI.
I came across one query which is:-
ALTER DATABASE CCTNS_CAS_DE_DB COLLATE Latin1_General_CI_AI
When I ran this query in my SQL Server it threw the following error:-
Msg 5030, Level 16, State 2, Line 1
The database could not be exclusively locked to perform the operation.
Msg 5072, Level 16, State 1, Line 1
ALTER DATABASE failed. The default collation of database 'CCTNS_CAS_DE_DB' cannot be set to Latin1_General_CI_AI.
I know this question has already been posted here but that was in a different context I think.
回答1:
Here's the biggest hint to your problem:
Msg 5030, Level 16, State 2, Line 1 The database could not be exclusively locked to perform the operation.
What you need to do is set the database to single-user mode before you run the ALTER DATABASE statement, and then set it back to multi-user mode when it's completed. This will lock the database and make it available only to the current connection, which will allow you to successfully run the ALTER DATABASE ... COLLATE statement.
You can use SQL Server Management Studio or T-SQL commands to do this.
回答2:
Need to set it to SINGLE_USER first.
ALTER DATABASE [database] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
GO
ALTER DATABASE [database] COLLATE SQL_1xCompat_CP850_CI_AS;
GO
ALTER DATABASE [database] SET MULTI_USER;
GO
回答3:
Work perfectly Thank you alot
ALTER DATABASE [database] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
GO
ALTER DATABASE [database] COLLATE SQL_1xCompat_CP850_CI_AS;
GO
ALTER DATABASE [database] SET MULTI_USER;
GO
来源：https://stackoverflow.com/questions/13785814/collation-error