SQL Server Admin 2014 :: Rename A Live Database?

I want to Replace The Big Log database with A new one ( A database with same structure).But current DB has many connection .

This is my plan :

1- Create a new database with same structure.

2- Rename current database to olddb with this code :

USE master
GO
EXEC sp_dboption CurDataBase, 'Single User', True
EXEC sp_renamedb 'CurDataBase', 'OldDataBase'
GO
3- Rename Newdb to current DB.
USE master
GO
EXEC sp_renamedb 'NewDataBase', 'CurDataBase'

is it true ? and Tsql code is ok ? (dont forget many of connection to curdatabase (that Is a log db) and loss some seconds data is not problems)