SQL Server开启READ_COMMITTED_SNAPSHOT

--查询数据库状态

select name,user_access,user_access_desc,

    snapshot_isolation_state,snapshot_isolation_state_desc,

    is_read_committed_snapshot_on

from sys.databases

 

--设置数据库为SINGLE_USER模式,减少锁定时间

ALTER DATABASE dbname SET SINGLE_USER WITH ROLLBACK IMMEDIATE

ALTER DATABASE dbname SET ALLOW_SNAPSHOT_ISOLATION ON

ALTER DATABASE dbname SET READ_COMMITTED_SNAPSHOT ON

ALTER DATABASE dbname SET MULTI_USER