解决SQL连接超时 整理SQL死锁 DECLARE @rid int DECLARE @rcount int set @rcount=0 DECLARE dt CURSOR FOR SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' OPEN dtDECLARE @tabname sysname FETCH NEXT FROM dt INTO @tabname WHILE (@@FETCH_STATUS <> -1) BEGIN IF (@@FETCH_STATUS <> -2) BEGINSET NOCOUNT ON DECLARE @tablename VARCHAR (128) DECLARE @execstr VARCHAR (255) DECLARE @objectid INT DECLARE @indexid INT DECLARE @frag DECIMAL DECLARE @maxfrag DECIMAL -- Decide on the maximum fragmentation to allow SELECT @maxfrag = 30.0 -- Declare cursor DECLARE tables CURSOR FOR SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' and table_name=@tabname CREATE TABLE #fraglist ( ObjectName CHAR (255), ObjectId INT, IndexName CHAR (255), IndexId INT, Lvl INT, CountPages INT, CountRows INT, MinRecSize INT, MaxRecSize INT, AvgRecSize INT, ForRecCount INT, Extents INT, ExtentSwitches INT, AvgFreeBytes INT, AvgPageDensity INT, ScanDensity DECIMAL, BestCount INT, ActualCount INT, LogicalFrag DECIMAL, ExtentFrag DECIMAL) -- Open the cursor OPEN tables -- Loop through all the tables in the database FETCH NEXT FROM tables INTO @tablename WHILE @@FETCH_STATUS = 0 BEGIN -- Do the showcontig of all indexes of the table INSERT INTO #fraglist EXEC ('DBCC SHOWCONTIG (''' + @tablename + ''') WITH FAST, TABLERESULTS, ALL_INDEXES, NO_INFOMSGS') FETCH NEXT FROM tables INTO @tablename END -- Close and deallocate the cursor CLOSE tables DEALLOCATE tables -- Declare cursor for list of indexes to be defragged DECLARE indexes CURSOR FOR SELECT ObjectName, ObjectId, IndexId, LogicalFrag FROM #fraglist WHERE LogicalFrag >= @maxfrag AND INDEXPROPERTY (ObjectId, IndexName, 'IndexDepth') > 0 -- Open the cursor OPEN indexes -- loop through the indexes FETCH NEXT FROM indexes INTO @tablename, @objectid, @indexid, @frag WHILE @@FETCH_STATUS = 0 BEGIN PRINT 'Executing DBCC INDEXDEFRAG (0, ' + RTRIM(@tablename) + ', ' + RTRIM(@indexid) + ') - fragmentation currently ' + RTRIM(CONVERT(varchar(15),@frag)) + '%' SELECT @execstr = 'DBCC INDEXDEFRAG (0, ' + RTRIM(@objectid) + ', ' + RTRIM(@indexid) + ')' EXEC (@execstr) FETCH NEXT FROM indexes INTO @tablename, @objectid, @indexid, @frag END -- Close and deallocate the cursor CLOSE indexes DEALLOCATE indexes -- Delete the temporary table DROP TABLE #fraglistprint @tabname +' 整理完成 ' END FETCH NEXT FROM dt INTO @tabname END CLOSE dt DEALLOCATE dt 来源:http://blog.sina.com.cn/s/blog_627f0fad0100fryt.html
DECLARE @rid int
DECLARE @rcount int
set @rcount=0
DECLARE dt CURSOR
FOR
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'
OPEN dtDECLARE @tabname sysname
FETCH NEXT FROM dt INTO @tabname
WHILE (@@FETCH_STATUS <> -1)
BEGIN
IF (@@FETCH_STATUS <> -2)
BEGINSET NOCOUNT ON
DECLARE @tablename VARCHAR (128)
DECLARE @execstr VARCHAR (255)
DECLARE @objectid INT
DECLARE @indexid INT
DECLARE @frag DECIMAL
DECLARE @maxfrag DECIMAL
-- Decide on the maximum fragmentation to allow
SELECT @maxfrag = 30.0
-- Declare cursor
DECLARE tables CURSOR FOR
SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE' and table_name=@tabname
CREATE TABLE #fraglist (
ObjectName CHAR (255),
ObjectId INT,
IndexName CHAR (255),
IndexId INT,
Lvl INT,
CountPages INT,
CountRows INT,
MinRecSize INT,
MaxRecSize INT,
AvgRecSize INT,
ForRecCount INT,
Extents INT,
ExtentSwitches INT,
AvgFreeBytes INT,
AvgPageDensity INT,
ScanDensity DECIMAL,
BestCount INT,
ActualCount INT,
LogicalFrag DECIMAL,
ExtentFrag DECIMAL)
-- Open the cursor
OPEN tables
-- Loop through all the tables in the database
FETCH NEXT
FROM tables
INTO @tablename
WHILE @@FETCH_STATUS = 0
BEGIN
-- Do the showcontig of all indexes of the table
INSERT INTO #fraglist
EXEC ('DBCC SHOWCONTIG (''' + @tablename + ''')
WITH FAST, TABLERESULTS, ALL_INDEXES, NO_INFOMSGS')
FETCH NEXT
FROM tables
INTO @tablename
END
-- Close and deallocate the cursor
CLOSE tables
DEALLOCATE tables
-- Declare cursor for list of indexes to be defragged
DECLARE indexes CURSOR FOR
SELECT ObjectName, ObjectId, IndexId, LogicalFrag
FROM #fraglist
WHERE LogicalFrag >= @maxfrag
AND INDEXPROPERTY (ObjectId, IndexName, 'IndexDepth') > 0
-- Open the cursor
OPEN indexes
-- loop through the indexes
FETCH NEXT
FROM indexes
INTO @tablename, @objectid, @indexid, @frag
WHILE @@FETCH_STATUS = 0
BEGIN
PRINT 'Executing DBCC INDEXDEFRAG (0, ' + RTRIM(@tablename) + ',
' + RTRIM(@indexid) + ') - fragmentation currently '
+ RTRIM(CONVERT(varchar(15),@frag)) + '%'
SELECT @execstr = 'DBCC INDEXDEFRAG (0, ' + RTRIM(@objectid) + ',
' + RTRIM(@indexid) + ')'
EXEC (@execstr)
FETCH NEXT
FROM indexes
INTO @tablename, @objectid, @indexid, @frag
END
-- Close and deallocate the cursor
CLOSE indexes
DEALLOCATE indexes
-- Delete the temporary table
DROP TABLE #fraglistprint @tabname +' 整理完成 '
END
FETCH NEXT FROM dt INTO @tabname
END
CLOSE dt
DEALLOCATE dt
来源:http://blog.sina.com.cn/s/blog_627f0fad0100fryt.html
2.建立相关索引.
3.提高硬件配置.
4.优化查询.
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