USE [master] GO ALTER DATABASE mydatabase SET RECOVERY SIMPLE WITH NO_WAIT GO ALTER DATABASE mydatabase SET RECOVERY SIMPLE --简单模式 GO USE mydatabase GO DBCC SHRINKFILE (N'mydatabase_Log' , 11, TRUNCATEONLY) GO USE [master] GO ALTER DATABASE mydatabase SET RECOVERY FULL WITH NO_WAIT GO ALTER DATABASE mydatabase SET RECOVERY FULL --还原为完全模式 GO