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SQL Server 2005 ÈÕ־ɾ³ýºÍÈÕÖ¾ÎļþÏÞÖÆ(ת)
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DECLARE @LogicalFileName sysname,
         @MaxMinutes INT,
         @NewSize INT
USE      szwzcheck              -- Òª²Ù×÷µÄÊý¾Ý¿âÃû
SELECT   @LogicalFileName = 'szwzcheck_Log',   -- ÈÕÖ¾ÎļþÃû
@MaxMinutes = 10,                -- Limit on time allowed to wrap log.
         @NewSize = 20                   -- ÄãÏëÉ趨µÄÈÕÖ¾ÎļþµÄ´óС(M)
-- Setup / initialize
DECLARE @OriginalSize int
SELECT @OriginalSize = size 
   from sysfiles
   WHERE name = @LogicalFileName
SELECT 'Original Size of ' + db_name() + ' LOG is ' + 
         CONVERT(VARCHAR(30),@OriginalSize) + ' 8K pages or ' + 
         CONVERT(VARCHAR(30),(@OriginalSize*8/1024)) + 'MB'
   from sysfiles
   WHERE name = @LogicalFileName
CREATE TABLE DummyTrans
   (DummyColumn char (8000) not null)
DECLARE @Counter    INT,
         @StartTime DATETIME,
         @TruncLog   VARCHAR(255)
SELECT   @StartTime = GETDATE(),
         @TruncLog = 'BACKUP LOG ' + db_name() + ' WITH TRUNCATE_ONLY'
DBCC SHRINKFILE (@LogicalFileName, @NewSize)
EXEC (@TruncLog)
-- Wrap the log if necessary.
WHILE      @MaxMinutes > DATEDIFF (mi, @StartTime, GETDATE()) -- time 
       AN


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