SQL Server无法收缩日志文件的原因分析及解决办法

USE [master]
GO
/****** Object: StoredProcedure [dbo].[ShrinkUser_DATABASESLogFile] Script Date: 01/05/2016 09:52:39 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROC [dbo].[ShrinkUser_DATABASESLogFile]
AS
BEGIN
DECLARE @DBNAME NVARCHAR(MAX)
DECLARE @SQL NVARCHAR(MAX)
–临时表保存数据
CREATE TABLE #DataBaseServerData
(
ID INT IDENTITY(1, 1) ,
DBNAME NVARCHAR(MAX) ,
Log_Total_MB DECIMAL(18, 1) NOT NULL ,
Log_FREE_SPACE_MB DECIMAL(18, 1) NOT NULL
)
–游标
DECLARE @itemCur CURSOR
SET
@itemCur = CURSOR FOR
SELECT name from SYS.[databases] WHERE [name] NOT IN (‘MASTER’,’MODEL’,’TEMPDB’,’MSDB’,’ReportServer’,’ReportServerTempDB’,’distribution’)
and state=0
OPEN @itemCur
FETCH NEXT FROM @itemCur INTO @DBNAME
WHILE @@FETCH_STATUS = 0
BEGIN
SET @SQL=N’USE [‘+@DBNAME+’];’+CHAR(10)
+’
DECLARE @TotalLogSpace DECIMAL(18, 1)
DECLARE @FreeLogSpace DECIMAL(18, 1)
DECLARE @filename NVARCHAR(MAX)
DECLARE @CanshrinkSize BIGINT
DECLARE @SQL1 nvarchar(MAX)
SELECT @TotalLogSpace=(SUM(CONVERT(dec(17, 2), sysfiles.size)) / 128)
FROM dbo.sysfiles AS sysfiles WHERE [groupid]=0
SELECT @FreeLogSpace = ( SUM(( size – FILEPROPERTY(name, ”SpaceUsed”) )) )/ 128.0
FROM sys.database_files
WHERE [type] = 1
SELECT @filename=name FROM sys.database_files WHERE [type]=1
SET @CanshrinkSize=CAST((@TotalLogSpace-@FreeLogSpace) AS BIGINT)
SET @SQL1 = ”USE [‘+@DBNAME+’]”
SET @SQL1 = @SQL1+
”DBCC SHRINKFILE ([” + @filename + ”],” + CAST(@CanshrinkSize+1 AS NVARCHAR(MAX)) + ”)”
EXEC (@SQL1)’
EXEC (@SQL)
FETCH NEXT FROM @itemCur INTO @DBNAME
END
CLOSE @itemCur
DEALLOCATE @itemCur
SELECT * FROM [#DataBaseServerData]
DROP TABLE [#DataBaseServerData]
END