sql - ハッシュ衝突によるデッドロック？

Question

2 つの異なるプロセス ID による、同じクラスター化インデックスの排他ロックでデッドロックが発生しています。データベースは RCSI モードです。2 つの質問があります。

1) 2 つの UPDATE ステートメントによる行の重複以外に、これはハッシュの衝突が原因である可能性がありますか?

2) 以下のトレース XML ファイルでは、クエリにパラメータが含まれています。パラメータ値を取得するには、SQL プロファイラでどのイベントをトレースする必要がありますか?

助けに感謝します。ありがとう

トレース XML ファイル

<deadlock-list>
 <deadlock victim="process8ad948">
  <process-list>
   <process id="process8ad948" taskpriority="0" logused="164520" waitresource="KEY: 7:72057601661599744 (01c1926aca97)" waittime="2833" ownerId="7491036" transactionname="user_transaction" lasttranstarted="2012-10-08T13:16:03.067" XDES="0x6b561b950" lockMode="U" schedulerid="4" kpid="2476" status="suspended" spid="94" sbid="0" ecid="0" priority="0" trancount="2" lastbatchstarted="2012-10-08T13:16:57.753" lastbatchcompleted="2012-10-08T13:16:57.750" clientapp="PeopleSoft" hostname="STGAAMY-PPSAPP" hostpid="31772" loginname="HRTRNADM" isolationlevel="read committed (2)" xactid="7491036" currentdb="7" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
    <executionStack>
     <frame procname="adhoc" line="1" stmtstart="440" sqlhandle="0x020000007b8741293b8e4d6542633962bc48489d3946a5d1">
UPDATE PS_GP_NEW_RTO_WRK SET ORIG_CAL_RUN_ID = (SELECT DISTINCT C.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL_RUN_ID=@P3 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO_WRK.EMPL_RCD AND C.CAL_ID = PS_GP_NEW_RTO_WRK.CAL_ID AND C.GP_PAYGROUP = PS_GP_NEW_RTO_WRK.GP_PAYGROUP AND B.CAL_ID= C.CAL_ID AND B.GP_PAYGROUP= C.GP_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL_RCD=C.EMPL_RCD AND B.ORIG_CAL_RUN_ID=C.ORIG_CAL_RUN_ID AND C.SEL_ACTION IN (N&apos;R&apos;,N&apos;Z&apos;) AND B.SEL_ACTION=N&apos;A&apos;) WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL_RUN_ID=@P6 AND (N&apos;N&apos;=@P7 OR EMPLID IN (SELECT EMPLID FROM PS_GP_GRP_LIST_RUN WHERE RUN_CNTL_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P10 AND @P11 AND C.CAL_RUN_ID=@P12 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO     </frame>
     <frame procname="unknown" line="1" sqlhandle="0x000000000000000000000000000000000000000000000000">
unknown     </frame>
    </executionStack>
    <inputbuf>
(@P1 nvarchar(508),@P2 nvarchar(508),@P3 nvarchar(508),@P4 nvarchar(508),@P5 nvarchar(508),@P6 nvarchar(508),@P7 nvarchar(508),@P8 nvarchar(508),@P9 nvarchar(508),@P10 nvarchar(508),@P11 nvarchar(508),@P12 nvarchar(508))UPDATE PS_GP_NEW_RTO_WRK SET ORIG_CAL_RUN_ID = (SELECT DISTINCT C.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL_RUN_ID=@P3 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO_WRK.EMPL_RCD AND C.CAL_ID = PS_GP_NEW_RTO_WRK.CAL_ID AND C.GP_PAYGROUP = PS_GP_NEW_RTO_WRK.GP_PAYGROUP AND B.CAL_ID= C.CAL_ID AND B.GP_PAYGROUP= C.GP_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL_RCD=C.EMPL_RCD AND B.ORIG_CAL_RUN_ID=C.ORIG_CAL_RUN_ID AND C.SEL_ACTION IN (N&apos;R&apos;,N&apos;Z&apos;) AND B.SEL_ACTION=N&apos;A&apos;) WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL_RUN_ID=@P6 AND (N&apos;N&apos;=@P7 OR EMPLID IN (SELECT EMPLID FROM PS_GP_GRP_LIST_RUN WHERE RUN_CNTL_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG_CAL_RUN_ID FRO    </inputbuf>
   </process>
   <process id="process5ff948" taskpriority="0" logused="2793096" waitresource="KEY: 7:72057601661599744 (9e1bb6c02ace)" waittime="1659" ownerId="7509883" transactionname="user_transaction" lasttranstarted="2012-10-08T13:16:50.867" XDES="0x6b6beb950" lockMode="U" schedulerid="1" kpid="2472" status="suspended" spid="95" sbid="0" ecid="0" priority="0" trancount="2" lastbatchstarted="2012-10-08T13:16:59.400" lastbatchcompleted="2012-10-08T13:16:59.400" clientapp="PeopleSoft" hostname="STGAAMY-PPSAPP" hostpid="32912" loginname="HRTRNADM" isolationlevel="read committed (2)" xactid="7509883" currentdb="7" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
    <executionStack>
     <frame procname="adhoc" line="1" stmtstart="440" sqlhandle="0x020000007b8741293b8e4d6542633962bc48489d3946a5d1">
UPDATE PS_GP_NEW_RTO_WRK SET ORIG_CAL_RUN_ID = (SELECT DISTINCT C.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL_RUN_ID=@P3 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO_WRK.EMPL_RCD AND C.CAL_ID = PS_GP_NEW_RTO_WRK.CAL_ID AND C.GP_PAYGROUP = PS_GP_NEW_RTO_WRK.GP_PAYGROUP AND B.CAL_ID= C.CAL_ID AND B.GP_PAYGROUP= C.GP_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL_RCD=C.EMPL_RCD AND B.ORIG_CAL_RUN_ID=C.ORIG_CAL_RUN_ID AND C.SEL_ACTION IN (N&apos;R&apos;,N&apos;Z&apos;) AND B.SEL_ACTION=N&apos;A&apos;) WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL_RUN_ID=@P6 AND (N&apos;N&apos;=@P7 OR EMPLID IN (SELECT EMPLID FROM PS_GP_GRP_LIST_RUN WHERE RUN_CNTL_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P10 AND @P11 AND C.CAL_RUN_ID=@P12 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO     </frame>
     <frame procname="unknown" line="1" sqlhandle="0x000000000000000000000000000000000000000000000000">
unknown     </frame>
    </executionStack>
    <inputbuf>
(@P1 nvarchar(508),@P2 nvarchar(508),@P3 nvarchar(508),@P4 nvarchar(508),@P5 nvarchar(508),@P6 nvarchar(508),@P7 nvarchar(508),@P8 nvarchar(508),@P9 nvarchar(508),@P10 nvarchar(508),@P11 nvarchar(508),@P12 nvarchar(508))UPDATE PS_GP_NEW_RTO_WRK SET ORIG_CAL_RUN_ID = (SELECT DISTINCT C.ORIG_CAL_RUN_ID FROM PS_GP_PYE_PRC_STAT B ,PS_GP_OLD_RTO_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL_RUN_ID=@P3 AND C.EMPLID = PS_GP_NEW_RTO_WRK.EMPLID AND C.CAL_RUN_ID = PS_GP_NEW_RTO_WRK.CAL_RUN_ID AND C.EMPL_RCD = PS_GP_NEW_RTO_WRK.EMPL_RCD AND C.CAL_ID = PS_GP_NEW_RTO_WRK.CAL_ID AND C.GP_PAYGROUP = PS_GP_NEW_RTO_WRK.GP_PAYGROUP AND B.CAL_ID= C.CAL_ID AND B.GP_PAYGROUP= C.GP_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL_RCD=C.EMPL_RCD AND B.ORIG_CAL_RUN_ID=C.ORIG_CAL_RUN_ID AND C.SEL_ACTION IN (N&apos;R&apos;,N&apos;Z&apos;) AND B.SEL_ACTION=N&apos;A&apos;) WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL_RUN_ID=@P6 AND (N&apos;N&apos;=@P7 OR EMPLID IN (SELECT EMPLID FROM PS_GP_GRP_LIST_RUN WHERE RUN_CNTL_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG_CAL_RUN_ID FRO    </inputbuf>
   </process>
  </process-list>
  <resource-list>
   <keylock hobtid="72057601661599744" dbid="7" objectname="HRTRN91.dbo.PS_GP_NEW_RTO_WRK" indexname="PS_GP_NEW_RTO_WRK" id="lock4991e6c00" mode="X" associatedObjectId="72057601661599744">
    <owner-list>
     <owner id="process5ff948" mode="X"/>
    </owner-list>
    <waiter-list>
     <waiter id="process8ad948" mode="U" requestType="wait"/>
    </waiter-list>
   </keylock>
   <keylock hobtid="72057601661599744" dbid="7" objectname="HRTRN91.dbo.PS_GP_NEW_RTO_WRK" indexname="PS_GP_NEW_RTO_WRK" id="lockdf24e800" mode="X" associatedObjectId="72057601661599744">
    <owner-list>
     <owner id="process8ad948" mode="X"/>
    </owner-list>
    <waiter-list>
     <waiter id="process5ff948" mode="U" requestType="wait"/>
    </waiter-list>
   </keylock>
  </resource-list>
 </deadlock>
</deadlock-list>

テーブル構造

CREATE TABLE [dbo].[PS_GP_NEW_RTO_WRK](
    [EMPLID] [nvarchar](11) NOT NULL,
    [CAL_RUN_ID] [nvarchar](18) NOT NULL,
    [EMPL_RCD] [smallint] NOT NULL,
    [GP_PAYGROUP] [nvarchar](10) NOT NULL,
    [CAL_ID] [nvarchar](18) NOT NULL,
    [ORIG_CAL_RUN_ID] [nvarchar](18) NOT NULL,
    [RSLT_VER_NUM] [smallint] NOT NULL,
    [RSLT_REV_NUM] [smallint] NOT NULL,
    [PRC_ORD_TS] [dbo].[PSDATETIME] NULL,
    [SEL_STAT] [nvarchar](1) NOT NULL,
    [SEL_RSN] [nvarchar](2) NOT NULL,
    [RTO_PRC_ID] [nvarchar](10) NOT NULL,
    [PYMT_DT] [dbo].[PSDATE] NULL,
    [PRC_BGN_DT] [dbo].[PSDATE] NULL,
    [PRC_END_DT] [dbo].[PSDATE] NULL
) ON [PRIMARY]

GO

ALTER TABLE [dbo].[PS_GP_NEW_RTO_WRK] SET (LOCK_ESCALATION = ENABLE)
GO

インデックス構造

CREATE UNIQUE CLUSTERED INDEX [PS_GP_NEW_RTO_WRK] ON [dbo].[PS_GP_NEW_RTO_WRK] 
(
    [EMPLID] ASC,
    [CAL_RUN_ID] ASC,
    [EMPL_RCD] ASC,
    [GP_PAYGROUP] ASC,
    [CAL_ID] ASC,
    [ORIG_CAL_RUN_ID] ASC
)
    WITH (PAD_INDEX  = OFF, 
    STATISTICS_NORECOMPUTE  = OFF, 
    SORT_IN_TEMPDB = OFF, 
    IGNORE_DUP_KEY = OFF, 
    DROP_EXISTING = OFF, 
    ONLINE = OFF, 
    ALLOW_ROW_LOCKS  = ON, 
    ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

Answer 1

1) 開発/テスト サーバーでバックアップを復元し、次のクエリを実行します。

SELECT *
FROM (
    SELECT [EMPLID],[CAL_RUN_ID],[EMPL_RCD],[GP_PAYGROUP],[CAL_ID],[ORIG_CAL_RUN_ID], %%lockres%% AS KeyLockID
    FROM [dbo].[PS_GP_NEW_RTO_WRK]
) x
WHERE x.KeyLockID IN ('(01c1926aca97)','(9e1bb6c02ace)')

(01c1926aca97)との(9e1bb6c02ace)値は「ロック ID」です (/deadlock-list/deadlock/process-list/process/@waitresource の値: KEY: 7:72057601661599744 (01c1926aca97), をKEY: 7:72057601661599744 (9e1bb6c02ace)参照)。3 行以上の場合、答えは「はい」です。

2) また、diff をチェックすることもできます。予定：

SELECT qp.*, txt.*
FROM sys.dm_exec_cached_plans cp
CROSS APPLY sys.dm_exec_query_plan(cp.plan_handle) qp
CROSS APPLY sys.dm_exec_sql_text(cp.plan_handle) txt
WHERE txt.text LIKE N'UPDATE PS\_GP\_NEW\_RTO\_WRK SET ORIG\_CAL\_RUN\_ID = (SELECT DISTINCT C.ORIG\_CAL\_RUN\_ID FROM PS\_GP\_PYE\_PRC\_STAT B ,PS\_GP\_OLD\_RTO\_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL\_RUN\_ID=@P3 AND C.EMPLID = PS\_GP\_NEW\_RTO\_WRK.EMPLID AND C.CAL\_RUN\_ID = PS\_GP\_NEW\_RTO\_WRK.CAL\_RUN\_ID AND C.EMPL\_RCD = PS\_GP\_NEW\_RTO\_WRK.EMPL\_RCD AND C.CAL\_ID = PS\_GP\_NEW\_RTO\_WRK.CAL\_ID AND C.GP\_PAYGROUP = PS\_GP\_NEW\_RTO\_WRK.GP\_PAYGROUP AND B.CAL\_ID= C.CAL\_ID AND B.GP\_PAYGROUP= C.GP\_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL\_RCD=C.EMPL\_RCD AND B.ORIG\_CAL\_RUN\_ID=C.ORIG\_CAL\_RUN\_ID AND C.SEL\_ACTION IN (N'R',N'Z') AND B.SEL\_ACTION=N'A') WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL\_RUN\_ID=@P6 AND (N'N'=@P7 OR EMPLID IN (SELECT EMPLID FROM PS\_GP\_GRP\_LIST\_RUN WHERE RUN\_CNTL\_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG\_CAL\_RUN\_ID FROM PS\_GP\_PYE\_PRC\_STAT B ,PS\_GP\_OLD\_RTO\_WRK C WHERE C.EMPLID BETWEEN @P10 AND @P11 AND C.CAL\_RUN\_ID=@P12 AND C.EMPLID = PS\_GP\_NEW\_RTO\_WRK.EMPLID AND C.CAL\_RUN\_ID = PS\_GP\_NEW\_RTO\_WRK.CAL\_RUN\_ID AND C.EMPL\_RCD = PS\_GP\_NEW\_RTO%' ESCAPE N'\'
ORDER BY txt.text

SELECT qp.*, txt.*
FROM sys.dm_exec_cached_plans cp
CROSS APPLY sys.dm_exec_query_plan(cp.plan_handle) qp
CROSS APPLY sys.dm_exec_sql_text(cp.plan_handle) txt
WHERE txt.text LIKE N'(@P1 nvarchar(508),@P2 nvarchar(508),@P3 nvarchar(508),@P4 nvarchar(508),@P5 nvarchar(508),@P6 nvarchar(508),@P7 nvarchar(508),@P8 nvarchar(508),@P9 nvarchar(508),@P10 nvarchar(508),@P11 nvarchar(508),@P12 nvarchar(508))UPDATE PS\_GP\_NEW\_RTO\_WRK SET ORIG\_CAL\_RUN\_ID = (SELECT DISTINCT C.ORIG\_CAL\_RUN\_ID FROM PS\_GP\_PYE\_PRC\_STAT B ,PS\_GP\_OLD\_RTO\_WRK C WHERE C.EMPLID BETWEEN @P1 AND @P2 AND C.CAL\_RUN\_ID=@P3 AND C.EMPLID = PS\_GP\_NEW\_RTO\_WRK.EMPLID AND C.CAL\_RUN\_ID = PS\_GP\_NEW\_RTO\_WRK.CAL\_RUN\_ID AND C.EMPL\_RCD = PS\_GP\_NEW\_RTO\_WRK.EMPL\_RCD AND C.CAL\_ID = PS\_GP\_NEW\_RTO\_WRK.CAL\_ID AND C.GP\_PAYGROUP = PS\_GP\_NEW\_RTO\_WRK.GP\_PAYGROUP AND B.CAL\_ID= C.CAL\_ID AND B.GP\_PAYGROUP= C.GP\_PAYGROUP AND B.EMPLID=C.EMPLID AND B.EMPL\_RCD=C.EMPL\_RCD AND B.ORIG\_CAL\_RUN\_ID=C.ORIG\_CAL\_RUN\_ID AND C.SEL\_ACTION IN (N'R',N'Z') AND B.SEL\_ACTION=N'A') WHERE EMPLID BETWEEN @P4 AND @P5 AND CAL\_RUN\_ID=@P6 AND (N'N'=@P7 OR EMPLID IN (SELECT EMPLID FROM PS\_GP\_GRP\_LIST\_RUN WHERE RUN\_CNTL\_ID=@P8 AND OPRID=@P9) ) AND EXISTS (SELECT B.ORIG\_CAL\_RUN\_ID FRO%' ESCAPE N'\'
ORDER BY txt.text

UPDATE または (@...)UPDATE ステートメントごとに異なる計画 (例: シリアル計画と並列計画) を取得する場合、この事実は最初の仮説 (ハッシュの衝突) を除外します。

拡張コメント:

T = SPID94 は UPDATE ステートメントの実行を開始します (シリアル プラン)

T+1 = SPID95 が UPDATE ステートメントの実行を開始します (並行計画)

T+2 = SPID94 は行/キー 4 で X ロックを取得します

T+3 = SPID95-thread1 は、行/キー 4 (SPID94 によって既にロックされています) で U ロックを取得しようとします。また、SPID95-thread2 は行/キー 9 で X ロックを取得します。

T+4 = SPID94 は行/キー 9 (SPID95 によって既にロックされています) で U ロックを取得しようとします。

結論: SPID94 は行/キー 4 に X ロックを持ち、行/キー 9 に U ロックを要求します。SPID95 は行/キー 9 に X ロックを持ち、行/キー 4 に U ロックを要求します。したがって、デッドロックが発生します。 .