The database could not be exclusively locked to perform the operation. (Microsoft SQL Server, Error: 5030)

Setp 1.

 ALTER DATABASE dbName
SET SINGLE_USER WITH ROLLBACK IMMEDIATE

Setp 2.

 ALTER DATABASE OldDbName MODIFY NAME = NewDbName

Setp 3.

 ALTER DATABASE dbName
SET MULTI_USER WITH ROLLBACK IMMEDIATE

CSV to MSSql (CSV파일을 이용한 테이블 Insert)

 BULK INSERT dbo.tableName FROM 'C\fileName.CSV' WITH (FIELDTERMINATOR = ',', ROWTERMINATOR = '\n')