为所有用户创建的数据库设置简单恢复模式和收缩日志文件

Question

我希望你能指出我正确的方向。我不是 T-SQL 的常客，但我做了一些谷歌搜索，并找到了下面的脚本。我稍微修正了脚本。

我希望脚本：

1. 选择除系统 DB 之外的所有数据库。
2. 将恢复设置为简单。
3. 收缩每个 db(.ldf) 的日志文件，系统 db 除外

剧本：

USE MASTER
declare
@isql varchar(2000),
@dbname varchar(64)

declare c1 cursor for select name from master..sysdatabases where name not in ('master','model','msdb','tempdb','ReportServer','ReportServerTempDB')
open c1
fetch next from c1 into @dbname
While @@fetch_status <> -1
    begin
    select @isql = 'ALTER DATABASE @dbname SET RECOVERY SIMPLE'
    select @isql = replace(@isql,'@dbname',@dbname)
    print @isql
    exec(@isql)
    select @isql='USE @dbname checkpoint'
    select @isql = replace(@isql,'@dbname',@dbname)
    print @isql
    exec(@isql)
    select @isql='DBCC SHRINKFILE @dbname.ldf'
    select @isql = replace(@isql,'@dbname',@dbname)
    print @isql
    exec(@isql)

    fetch next from c1 into @dbname
    end
close c1
deallocate c1

Answer 1

使用脚本来收缩除系统 DB 之外的所有数据库的日志文件。

USE MASTER   
GO    
SET QUOTED_IDENTIFIER ON  
GO  
SET ARITHABORT ON  
GO  

DECLARE @DBName NVARCHAR(255),@LogicalFileName NVARCHAR(255),@DBRecoveryDesc Varchar(200)  

DECLARE DatabaseList CURSOR   
FOR   
SELECT name,recovery_model_desc  
FROM sys.databases  
WHERE state_desc = 'ONLINE'  
AND is_read_only = 0  
and database_id>4  
ORDER BY name  

OPEN DatabaseList  
FETCH NEXT FROM DatabaseList INTO @DBName,@DBRecoveryDesc  
WHILE @@FETCH_STATUS = 0     
BEGIN   

SET @LogicalFileName=(SELECT top 1 name FROM sys.master_files AS mf WHERE DB_NAME(database_id)=@DBName and type_desc='LOG')  

If @DBRecoveryDesc='Full'  
Begin  
     Print('Use ['+@DBName+'] 
            GO  

           ALTER DATABASE ['+@DBName+'] SET RECOVERY SIMPLE WITH NO_WAIT
           GO   

            DBCC SHRINKFILE ('''+@LogicalFileName+''',10)  
            GO  

            ALTER DATABASE ['+@DBName+'] SET RECOVERY FULL WITH  NO_WAIT
            GO ')  
Print '----------------------------------------------------------- '  
END  

If @DBRecoveryDesc='Simple'  
Begin   
     Print('Use ['+@DBName+']  
            GO  

            DBCC SHRINKFILE ('''+@LogicalFileName+''',10)    
            GO    
 ')  
Print '----------------------------------------------------------- '

END

         FETCH NEXT FROM DatabaseList INTO @DBName,@DBRecoveryDesc
      END  
CLOSE DatabaseList  
DEALLOCATE DatabaseList

Answer 2

我一直对游标很反感，所以我写了这个，因为我可以更好地理解它。它完全基于 AA.SC 的回答（顺便谢谢你），只是以我认为的方式提出。如果这与其他人的想法一致，那就太好了。请注意，之后我并没有将它放回完全恢复模式。

SELECT 
'--', d.name dbName, d.recovery_model, d.recovery_model_desc , mf.name LogicalFileName,
'
use [' + d.name + ']

if(' + cast(d.recovery_model as varchar(5)) + ' = 1)
BEGIN
    ALTER DATABASE ['+ d.name +'] SET RECOVERY SIMPLE WITH NO_WAIT
END
GO 
DBCC SHRINKFILE (''' + mf.name  +''',10)  
GO  
'
FROM sys.databases d
join sys.master_files mf
    on d.database_id = mf.database_id
    and mf.type_desc = 'LOG' 
WHERE d.state_desc = 'ONLINE'  
AND d.is_read_only = 0  
and d.database_id > 4 
--and d.recovery_model = 1
ORDER BY d.name