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 DEAD LOCKS

Author  Topic 

avmreddy17
Posting Yak Master

180 Posts

Posted - 2007-12-12 : 17:33:18
I have a Orders table, this has a Primary key on one Column
( OrderID )

We are using a Stored Proc to insert data into this table ( I am not
starting the Transaction in the stored Proc ) as its controlled by the front end written in C++.

when ever there is a update on this Orders table I move the record to the ordershistory table. ( I have a trigger in the CTOrders table
on INSERT and UPDATE )

The C++ App does an Async I/O. Offlate the App is experiencing a few dead locks during the day espicially at the market open and Close as this database is for the Trading System.

I need a few pointers as to start debugging this.

Thx


tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2007-12-12 : 17:40:41
Please read the topics in BOL that discuss how to troubleshoot deadlocks. You can choose to do this via SQL Profiler or via the Error Log and trace flags.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/
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avmreddy17
Posting Yak Master

180 Posts

Posted - 2007-12-13 : 12:13:13
Is it good to contril the Transaction in the Insert Stored Proc ( I mean using BEGIN TRAN and COMMIT TRAN ). Here the Front End
controls the Transaction.

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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2007-12-13 : 12:55:02
As long as it is coded properly, it shouldn't matter. I prefer to put it all inside the stored procedure though.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/
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