为什么没有在死锁图中填充对象名和索引名？

Question

我收到了一个请求，要求检查 2008 sp3 服务器（10.0.5500.0 - 企业版（64 位））上的一些错误，看看我是否能找到之前发生的死锁。

Traceflag 1222 未启用，服务器所有者也不想启用它。我使用了扩展事件并使用以下查询提取了一些信息：

    SELECT  CAST(event_data.value('(event/data/value)[1]',
                               'varchar(max)') AS XML) AS DeadlockGraph
FROM    ( SELECT    XEvent.query('.') AS event_data
          FROM      (    -- Cast the target_data to XML 
                      SELECT    CAST(target_data AS XML) AS TargetData
                      FROM      sys.dm_xe_session_targets st
                                JOIN sys.dm_xe_sessions s
                                 ON s.address = st.event_session_address
                      WHERE     name = 'system_health'
                                AND target_name = 'ring_buffer'
                    ) AS Data -- Split out the Event Nodes 
                    CROSS APPLY TargetData.nodes('RingBufferTarget/
                                     event[@name="xml_deadlock_report"]')
                    AS XEventData ( XEvent )
        ) AS tab ( event_data )

我收到了很多信息，看起来像这样：

<deadlock>
  <victim-list>
    <victimProcess id="process14846ccbc8" />
  </victim-list>
  <process-list>
    <process id="process14846ccbc8" taskpriority="0" logused="0" waitresource="KEY: 25:72057594099728384 (0800dfc12261)" waittime="2842" ownerId="7035766745" transactionname="UPDATE" lasttranstarted="2012-11-20T07:50:25.023" XDES="0x14d9ade3b0" lockMode="U" schedulerid="8" kpid="17268" status="background" spid="19" sbid="0" ecid="0" priority="0" trancount="2">
      <executionStack>
        <frame procname="" line="53" stmtstart="2674" stmtend="2980" sqlhandle="0x030019002cf5fc35c2449200d2a000000100000000000000" />
      </executionStack>
      <inputbuf />
    </process>
    <process id="process3d9bdc8" taskpriority="0" logused="224" waitresource="KEY: 25:72057594099793920 (2f00faaf5d8e)" waittime="2315" ownerId="7035765940" transactionname="user_transaction" lasttranstarted="2012-11-20T07:50:24.913" XDES="0xdad541970" lockMode="U" schedulerid="6" kpid="15448" status="background" spid="23" sbid="0" ecid="0" priority="0" trancount="2">
      <executionStack>
        <frame procname="" line="549" stmtstart="32736" stmtend="33274" sqlhandle="0x03001900b9667f2bc41ade003ea000000100000000000000" />
        <frame procname="" line="549" stmtstart="34038" stmtend="35374" sqlhandle="0x03001900f28a732c051bde003ea000000100000000000000" />
        <frame procname="" line="81" stmtstart="4284" stmtend="4392" sqlhandle="0x030019002cf5fc35c2449200d2a000000100000000000000" />
      </executionStack>
      <inputbuf />
    </process>
  </process-list>
  <resource-list>
    <keylock hobtid="72057594099728384" dbid="25" objectname="" indexname="" id="lock6b6a4ba00" mode="X" associatedObjectId="72057594099728384">
      <owner-list>
        <owner id="process3d9bdc8" mode="X" />
      </owner-list>
      <waiter-list>
        <waiter id="process14846ccbc8" mode="U" requestType="wait" />
      </waiter-list>
    </keylock>
    <keylock hobtid="72057594099793920" dbid="25" objectname="" indexname="" id="lock74edcf180" mode="U" associatedObjectId="72057594099793920">
      <owner-list>
        <owner id="process14846ccbc8" mode="U" />
      </owner-list>
      <waiter-list>
        <waiter id="process3d9bdc8" mode="U" requestType="wait" />
      </waiter-list>
    </keylock>
  </resource-list>
</deadlock>

如果 objectname="" indexname="" ，我如何找出死锁是什么？

Answer 1

我无法回答为什么缺少信息，但我可以指出如何提取它。

首先，移至该数据库：

SELECT DB_NAME(25);

取这个结果，然后：

USE <db_name>;

现在找出这些 hobt_id 代表什么：

SELECT OBJECT_SCHEMA_NAME(object_id), OBJECT_NAME(object_id) 
FROM sys.partitions 
WHERE hobt_id IN (72057594099728384, 72057594099793920);

您还可以使用以下方法找到所涉及的批次（如果它们仍然存在）：

SELECT * FROM sys.dm_exec_sql_text(0x03001900b9667f2bc41ade003ea000000100000000000000);
SELECT * FROM sys.dm_exec_sql_text(0x03001900f28a732c051bde003ea000000100000000000000);
SELECT * FROM sys.dm_exec_sql_text(0x030019002cf5fc35c2449200d2a000000100000000000000);

The offsets are there in the ExecutionStack so you can drill deeper into that output if you like (many examples of using offsets online).

EDIT Mr. Sandwiches pointed out the following Connect item (no longer available), where Microsoft has stated that this bug is fixed in SQL Server 2012. It won't be fixed in 2008/R2.

http://connect.microsoft.com/SQLServer/feedback/details/635391/objectname-indexname-not-populated-in-deadlock-graph-in-sql2008-sp1-and-sql2008-r2