如何避免这两个SQL语句之间出现死锁？

How can I avoid a deadlock between these two SQL statements?

我有两个在独立线程中运行的存储过程，它们在SQL Server 2005上运行。一个过程将新行插入到一组表中，另一个过程从同一组表中删除旧数据。这些过程在表DLevel和Model上陷入僵局。这是模式：

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while (...)
BEGIN
DELETE top (1000) FROM DLevel WHERE DFileID = @fileID1
...
END

SQL语句2：

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while (...)
BEGIN
INSERT INTO Element (ElementID, DFileID, LevelNum, ...)
SELECT top (1000) el.ElementID, el.DFileID, el.LevelNum, ...
FROM ElementLoader el WITH (nolock)
LEFT OUTER JOIN Element e WITH (nolock)
ON e.ElementID = el.ElementID
WHERE el.DFileID = @fileID2
AND e.ElementID IS NULL
ORDER BY el.ElementID
...
END

注意：@ fileID1和@ fileID2的值始终保证是不同的。 DLevel表平均大约一个DFileID有60行，因此将在一次通过中完成所有行的删除。

如何避免这两个SQL语句之间的死锁？

编辑1：
重写以更好地阐明问题；新增图片；简化了SQL，并删除了对DLevel表的联接，该联接不会导致死锁。

编辑2：
添加了死锁图的XML。
现在，死锁发生在"模型"表上。与DLevel表类似的Model删除语句和架构。

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<deadlock victim="process2bae38">
<process-list>
<process id="process2bae38" taskpriority="0" logused="4760" waitresource="PAGE: 11:1:1946" waittime="46" ownerId="4127445" transactionname="DELETE" lasttranstarted="2010-06-24T16:19:00.107" XDES="0xffffffff90552ae0" lockMode="S" schedulerid="1" kpid="14252" STATUS="suspended" spid="58" sbid="0" ecid="0" priority="0" transcount="2" lastbatchstarted="2010-06-24T16:19:00.107" lastbatchcompleted="2010-06-24T16:19:00.107" clientapp=".Net SqlClient Data Provider" hostname="LT0103" hostpid="1668" loginname="NT AUTHORITY\\SYSTEM" isolationlevel="read committed (2)" xactid="4127445" currentdb="11" lockTimeout="4294967295" clientoption1="673185824" clientoption2="128056">
<executionStack>
<frame procname="CadExplorer5.dbo.pCleanUpOldFiles" line="364" stmtstart="23718" stmtend="23834" sqlhandle="0x03000b00fb1c2229b1a7f7009f9d00000100000000000000">
DELETE top (@batchSize) FROM Model WHERE DFileID = @fileID </frame>
</executionStack>
<inputbuf>
Proc [DATABASE Id = 11 Object Id = 690101499] </inputbuf>
</process>
<process id="process2c95b8" taskpriority="0" logused="283388" waitresource="KEY: 11:72057594039304192 (8100bdf15e8b)" waittime="78" ownerId="4127412" transactionname="INSERT" lasttranstarted="2010-06-24T16:19:00.103" XDES="0xffffffff81d5ef18" lockMode="S" schedulerid="2" kpid="8460" STATUS="suspended" spid="63" sbid="0" ecid="0" priority="0" transcount="2" lastbatchstarted="2010-06-24T16:18:59.413" lastbatchcompleted="2010-06-24T16:18:59.413" clientapp=".Net SqlClient Data Provider" hostname="LT0103" hostpid="1668" loginname="NT AUTHORITY\\SYSTEM" isolationlevel="read committed (2)" xactid="4127412" currentdb="11" lockTimeout="4294967295" clientoption1="673185824" clientoption2="128056">
<executionStack>
<frame procname="CadExplorer5.dbo.pLoadElements" line="288" stmtstart="28796" stmtend="33194" sqlhandle="0x03000b00a689fe2b2c5107019f9d00000100000000000000">
INSERT INTO Element (
ElementID, DFileID, ModelID, ElementTypeID, CADElementID,
ParentID,
LevelNum,
Depth, NumChildren,
Color, Weight, STYLE, Xlo, Ylo, Zlo, Xhi, Yhi, Zhi,
Diagonal, XCenter,
BitFlags, ElementModTime
)
SELECT top (@batchSize)
el.ElementID, el.DFileID, el.ModelID, el.ElementTypeID, el.CADElementID,
parent.ElementID AS ParentID,
(CASE WHEN el.LoaderType = 1 AND et.IsGraphical = 1 THEN el.LevelAttrib ELSE NULL END) AS LevelNum,
--l.LevelNum,
el.Depth, el.NumChildren,
el.Color, el.Weight, el.Style, el.Xlo, el.Ylo, el.Zlo, el.Xhi, el.Yhi, el.Zhi,
el.Diagonal, el.XCenter, </frame>
</executionStack>
<inputbuf>
Proc [DATABASE Id = 11 Object Id = 738101670] </inputbuf>
</process>
</process-list>
<resource-list>
<pagelock fileid="1" pageid="1946" dbid="11" objectname="CadExplorer5.dbo.Element" id="lockffffffff86ffd080" mode="IX" associatedObjectId="72057594039107584">
<owner-list>
<owner id="process2c95b8" mode="IX"/>
</owner-list>
<waiter-list>
<waiter id="process2bae38" mode="S" requestType="wait"/>
</waiter-list>
</pagelock>
<keylock hobtid="72057594039304192" dbid="11" objectname="CadExplorer5.dbo.Model" indexname="PK_Model" id="lockffffffff8d66db80" mode="X" associatedObjectId="72057594039304192">
<owner-list>
<owner id="process2bae38" mode="X"/>
</owner-list>
<waiter-list>
<waiter id="process2c95b8" mode="S" requestType="wait"/>
</waiter-list>
</keylock>
</resource-list>
</deadlock>