参考 ： https://www.cnblogs.com/gered/p/9450622.html

CREATE DATABASE db_logs ON  PRIMARY 
( NAME = N'db_logs_Data', FILENAME = N'D:\dandantang\data1\db_logs_Data1.mdf' , SIZE = 3072KB , FILEGROWTH = 10% )
 LOG ON 
( NAME = N'db_logs_log', FILENAME = N'E:\dandantang\dblog\db_logs_log1.ldf' , SIZE = 1024KB , FILEGROWTH = 10%)
GO
alter database db_logs set offline
--覆盖替换   重命名替换
alter database db_logs set online


use db_logs


alter database db_logs set emergency
go
--置数据库为单用户模式
alter database db_logs set single_user with rollback immediate
go
use master
go
--重建数据库日志文件
alter database db_logs Rebuild Log on  
(name=DataSource_Data_log,filename='E:\dandantang\dblog\db_logs_log.ldf')
go
--最后设置数据库为多用户模式。
alter database db_logs set multi_user  

 

可能需要的操作

alter database CQXX5000 set emergency
alter database cqxx5000 set single_user with rollback immediate
dbcc checkdb('cqxx5000',REPAIR_ALLOW_DATA_LOSS)

alter database CQXX5000 set multi_user
ALTER DATABASE CQXX5000 SET online