Deadlock Within Stored Procedure - Need Help

Jun 12, 2007

We just went live today with a production SQL Server 2005 database
running with our custom Java application. We are utilizing the jTDS
open source driver. We migrated our existing application which was
using InterBase over to SQL Server. To minimize the impact to our
code, we created a stored procedure which would allow us to manage our
primary key IDs (mimicing the InterBase Generator construct). Now
that we have 150+ users in the system, we get the following error
periodically:

Caused by: java.sql.SQLException: Transaction (Process ID 115) was
deadlocked on lock resources with another process and has been chosen
as the deadlock victim. Rerun the transaction.
at
net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnos tic(SQLDiagnostic.java:
365)
at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(Td sCore.java:2781)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCor e.java:2224)
at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(T dsCore.java:633)
at
net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL Query(JtdsStatement.java:
418)
at
net.sourceforge.jtds.jdbc.JtdsPreparedStatement.ex ecuteQuery(JtdsPreparedStatement.java:
696)
at database.Generator.next(Generator.java:39)

Here is the script that creates our stored procedure:

USE [APPLAUSE]
GO
/****** Object: StoredProcedure [dbo].[GetGeneratorValue] Script
Date: 06/12/2007 10:27:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[GetGeneratorValue]
@genTableName varchar(50),
@Gen_Value int = 0 OUT
AS
BEGIN
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
BEGIN TRAN
SELECT @Gen_Value = GENVALUE FROM GENERATOR WHERE
GENTABLENAME=@genTableName
UPDATE GENERATOR SET GENVALUE = @Gen_Value+1 WHERE
GENTABLENAME=@genTableName
COMMIT;
SET @Gen_Value = @Gen_Value+1
SELECT @Gen_Value
END


This stored procedure is the ONLY place that the GENERATOR table is
being accessed. If anyone can provide any guidance on how to avoid
the deadlock errors, I would greatly appreciate it. The goal of this
stored procedure is to select the current value of the appropriate
record from the table and then increment it, ALL automically so that
there is no possibility of multiple processes getting the same IDs.

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Why The Deadlock In This Two Stored Procedure

Oct 12, 2006

I have two store rpcedure as shown bellow,
When I run first dt_deadlock2 and then dt_deadlock1 deadlock happend and dt_deadlock1 is discarded by SQL server giving the deadlock message. What is the reason for it ?

CREATE PROCEDURE [agcdb].[dt_deadlock2] AS
BEGIN TRAN
UPDATE t1 SET i = 99 WHERE i = 9
WAITFOR DELAY '00:00:10'
Select * from t1
COMMIT
GO


CREATE PROCEDURE [agcdb].[dt_deadlock1] AS
BEGIN TRAN
UPDATE t1 SET i = 11 WHERE i = 1
COMMIT
GO


Regards
Anil

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I'm having a deadlock issue with a SQL Express database and a stored procedure call that ends up adding rows to three different tables, with the following basic heirarchy:

[Top]
|
+-----[Mid]
|
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This was originally setup with auto-generated keys at each level, and the psuedo code for the stored procedure that's being called is basically:



begin transaction

insert into TopTable values from openXML

select @topID = scope_identity()

insert into MidTable values from openXML and @topID

insert into EndTable values from openXML and (select ID from MidTable that was just inserted)

commit transaction



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My collegues and I have been searching out the issue and working on the problem off and on for the last several days, but we're still a bit stuck. Is there something we've missed? Any pointers to a possible solution?

Following is the deadlock graph data from one of the deadlocks:

Deadlock graph 1379 1 sa 0X01 19 Z014719 2007-03-20 10:10:20.527 <deadlock-list>
<deadlock victim="process5b9c48">
<process-list>
<process id="process5b8c58" taskpriority="0" logused="1268" waitresource="KEY: 7:72057594039304192 (f60073ab7d7b)" waittime="4062" ownerId="48709" transactionname="user_transaction" lasttranstarted="2007-03-20T10:10:16.400" XDES="0x5b8d190" lockMode="S" schedulerid="1" kpid="3640" status="suspended" spid="56" sbid="0" ecid="0" priority="0" transcount="2" lastbatchstarted="2007-03-20T10:10:16.370" lastbatchcompleted="2007-03-20T10:10:16.370" clientapp=".Net SqlClient Data Provider" hostname="Z014719" hostpid="3040" loginname="HTCHCON000307" isolationlevel="read committed (2)" xactid="48709" currentdb="7" lockTimeout="4294967295" clientoption1="673316896" clientoption2="128056">
<executionStack>
<frame procname="DeadlockTest.dbo.spWriteTable" line="59" stmtstart="2758" stmtend="4272" sqlhandle="0x030007003ec4c60b2a379700f79800000100000000000000">
insert MidTable (
TopID,
[Name],
[Value])
select
TopID = @TopTableId,
[Name] = r.[Name],
[Value] = r.[Value]
from OPENXML (@hdoc,&apos;/data/top/mid&apos;, 1)
WITH ([Name] VARCHAR(50), [Value] int)r</frame>
</executionStack>
<inputbuf>
Proc [Database Id = 7 Object Id = 197575742] </inputbuf>
</process>
<process id="process5b9c48" taskpriority="0" logused="624" waitresource="KEY: 7:72057594039304192 (f5009d04c869)" waittime="4062" ownerId="48726" transactionname="user_transaction" lasttranstarted="2007-03-20T10:10:16.400" XDES="0x5bd8860" lockMode="S" schedulerid="1" kpid="3600" status="suspended" spid="59" sbid="0" ecid="0" priority="0" transcount="2" lastbatchstarted="2007-03-20T10:10:16.370" lastbatchcompleted="2007-03-20T10:10:16.370" clientapp=".Net SqlClient Data Provider" hostname="Z014719" hostpid="3040" loginname="HTCHCON000307" isolationlevel="read committed (2)" xactid="48726" currentdb="7" lockTimeout="4294967295" clientoption1="673316896" clientoption2="128056">
<executionStack>
<frame procname="DeadlockTest.dbo.spWriteTable" line="59" stmtstart="2758" stmtend="4272" sqlhandle="0x030007003ec4c60b2a379700f79800000100000000000000">
insert MidTable (
TopID,
[Name],
[Value])
select
TopID = @TopTableId,
[Name] = r.[Name],
[Value] = r.[Value]
from OPENXML (@hdoc,&apos;/data/top/mid&apos;, 1)
WITH ([Name] VARCHAR(50), [Value] int)r</frame>
</executionStack>
<inputbuf>
Proc [Database Id = 7 Object Id = 197575742] </inputbuf>
</process>
</process-list>
<resource-list>
<keylock hobtid="72057594039304192" dbid="7" objectname="DeadlockTest.dbo.TopTable" indexname="PK_TopTable" id="lock35dc680" mode="X" associatedObjectId="72057594039304192">
<owner-list>
<owner id="process5b8c58" mode="X"/>
</owner-list>
<waiter-list>
<waiter id="process5b9c48" mode="S" requestType="wait"/>
</waiter-list>
</keylock>
<keylock hobtid="72057594039304192" dbid="7" objectname="DeadlockTest.dbo.TopTable" indexname="PK_TopTable" id="lock35dcb00" mode="X" associatedObjectId="72057594039304192">
<owner-list>
<owner id="process5b9c48" mode="X"/>
</owner-list>
<waiter-list>
<waiter id="process5b8c58" mode="S" requestType="wait"/>
</waiter-list>
</keylock>
</resource-list>
</deadlock>
</deadlock-list>

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Activated procedure code

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.........................
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Public Class Form1

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End Class
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More Information for you to know:
I have the "ssmsExpressDB" database in the Database Expolorer of VB 2005 Express. But I do not know how to get the SqlConnection and the SqlDataAdapter into the Form1. I do not know how to get the Fill Method implemented properly.
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ELSEBEGIN SET @SQLString='SELECT       Batch.BatchID, Batch.Created_By, Batch.RequestSuccessfulRecord_Count, Batch.ResponseFailedRecord_Count,   Batch.RequestTotalRecord_Count, Batch.Request_Filename, Batch.Response_Filename, Batch.LastUpdated_By,   Batch.LastUpdated, Batch.Submitted_By, Batch.Submitted_On, Batch.CheckedOut_By, Batch.Checked_Out_Status,   Batch.Batch_Description, Batch.Status_Code, Batch.Created_On, Batch.Source, Batch.Archived_Status,  Batch.Archived_By, Batch.Archived_On, Batch.Processing_Mode, Batch.Batch_TemplateID, Batch.WindowID,Batch.WindowDetails,   BatchTemplate.Batch_Type, BatchTemplate.Batch_SubType  FROM           Batch  INNER JOIN  BatchTemplate ON Batch.Batch_TemplateID = BatchTemplate.Batch_TemplateID WHERE  ((@V_BatchID IS NULL) OR (isnull (Batch.BatchID, '''') LIKE @SSS )) AND  ((@V_UserID IS NULL) OR (isnull (Batch.Created_By , '''') LIKE @V_UserID )) AND  ((Batch.Created_On >= @V_FromDateTime ) AND (Batch.Created_On <=  @V_ToDateTime )) AND  Batch.Archived_Status = 1 '
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 if (@V_BatchType IS not null) begin  set @SQLString=@SQLString + ' AND   (BatchTemplate.Batch_Type  in ('+@V_BatchType+'))' end
END
PRINT @SQLString
SET @ParmDefinition = N' @V_BatchStatus Varchar(30), @V_BatchType VARCHAR(50), @V_BatchID NUMERIC(9), @V_UserID CHAR(8), @V_FromDateTime DATETIME , @V_ToDateTime DATETIME, @SSS varchar(500)'
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GO
SET QUOTED_IDENTIFIER OFF GOSET ANSI_NULLS ON GO
 
 
The above stored procedure is related to a search screen where in User is able to search from a variety of fields that include userID (corresponding column Batch.Created_By) and batchID (corresponding column Batch.BatchID). The column UserID is a varchar whereas batchID is a numeric.
REQUIREMENT:
The stored procedure should cater to a typical search where any of the fields can be entered. meanwhile it also should be able to do a partial search on BatchID and UserID.
 
Please help me regarding the same.
 
Thanks in advance.
 
Sandeep Kumar
 

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------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------
This is the error...


Msg 8114, Level 16, State 5, Procedure sp_SearchCandidatesAdvanced, Line 24

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------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------
This is the exec point...


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------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------
This is the STORED PROCEDURE...


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@PositionType int = 0,

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@EndAvailableDate DATETIME = NULL,

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