linux下的mysql数据库大小写问题

SQL2005 1个多G的日志，有时候清不掉。所以找了这段代码。
有时候清理日志未清理成1M 请多执行几遍。一般清况下执行一次就可以的。
我碰到过要执行两遍的。

1SELECT@LogicalFileName='Test_log',

Test_log 为日志逻辑名称。

<!--<br/ /><br/ />Code highlighting produced by Actipro CodeHighlighter (freeware)<br/ />http://www.CodeHighlighter.com/<br/ /><br/ />-->

--=============================================
--Author:fighter
--Createdate: 2009-3-15
--Description: clearsqllog
--=============================================
CREATEPROCEDURE[dbo].[tools_ClearSqlLog]

AS
BEGIN

SETNOCOUNTON
DECLARE@LogicalFileNamesysname,
@MaxMinutesINT,
@NewSizeINT

SELECT@LogicalFileName='Test_log',
@MaxMinutes=1,
@NewSize=1

--Setup/initialize
DECLARE@OriginalSizeint
SELECT@OriginalSize=sizeFROMsysfilesWHEREname=@LogicalFileName
SELECT'OriginalSizeof'+db_name()+'LOGis'+
CONVERT(VARCHAR(30),@OriginalSize)+'8Kpagesor'+
CONVERT(VARCHAR(30),(@OriginalSize*8/1024))+'MB'
FROMsysfiles
WHEREname=@LogicalFileName

CREATETABLEDummyTrans
(DummyColumnchar(8000)notnull)

DECLARE@CounterINT,
@StartTimeDATETIME,
@TruncLogVARCHAR(255)
SELECT@StartTime=GETDATE(),
@TruncLog='BACKUPLOG'+db_name()+'WITHTRUNCATE_ONLY'

DBCCSHRINKFILE(@LogicalFileName,@NewSize)
EXEC(@TruncLog)
--Wrapthelogifnecessary.
WHILE@MaxMinutes>DATEDIFF(mi,@StartTime,GETDATE())--timehasnotexpired
AND@OriginalSize=(SELECTsizeFROMsysfilesWHEREname=@LogicalFileName)
AND(@OriginalSize*8/1024)>@NewSize
BEGIN--Outerloop.
SELECT@Counter=0
WHILE((@Counter<@OriginalSize/16)AND(@Counter<50000))
BEGIN--update
INSERTDummyTransVALUES('FillLog')
DELETEDummyTrans
SELECT@Counter=@Counter+1
END
EXEC(@TruncLog)
END
SELECT'FinalSizeof'+db_name()+'LOGis'+
CONVERT(VARCHAR(30),size)+'8Kpagesor'+
CONVERT(VARCHAR(30),(size*8/1024))+'MB'
FROMsysfiles
WHEREname=@LogicalFileName

DROPTABLEDummyTrans
SETNOCOUNTOFF

END