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Update Command Concurrency error - Specific Help

Posted on 2009-04-03
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Last Modified: 2013-12-25
I get a concurrency error when I update my table.  If I ad a new record via "INVENTORY_DRIBindingSource.AddNew()" and then Me.INVENTORY_DRIBindingSource.EndEdit()
        Me.INVENTORY_DRITableAdapter.Update(Me.DIMMSDataSet.INVENTORY_DRI).  All Works fine.  If I open up that specific record & make a change then run:
Me.INVENTORY_DRIBindingSource.EndEdit()
        Me.INVENTORY_DRITableAdapter.Update(Me.DIMMSDataSet.INVENTORY_DRI)
I get the error. Below is my FillByID code...maybe that is the issue.
SELECT     INVENTORY_DRI.PartID, INVENTORY_DRI.PartName, INVENTORY_DRI.PartDescription, INVENTORY_DRI.StockingUnits, INVENTORY_DRI.Location, 

                      SUM(TRX_ROW_DRI.PartsMade - TRX_ROW_DRI.QtyBad) AS PartBalance, INVENTORY_DRI.ID, INVENTORY_DRI.UnitWeight, 

                      INVENTORY_DRI.PartNumber, INVENTORY_DRI.UPC_SKU, INVENTORY_DRI.ItemType, INVENTORY_DRI.ReOrderQty, INVENTORY_DRI.PrefVendor, 

                      INVENTORY_DRI.InActive, INVENTORY_DRI.Offsite, INVENTORY_DRI.OffsiteLocation, INVENTORY_DRI.CostPerUnit, INVENTORY_DRI.DefPurch, 

                      INVENTORY_DRI.Location2

FROM         INVENTORY_DRI LEFT OUTER JOIN

                      TRX_ROW_DRI ON INVENTORY_DRI.PartID = TRX_ROW_DRI.PartID

GROUP BY INVENTORY_DRI.PartID, INVENTORY_DRI.PartName, INVENTORY_DRI.PartDescription, INVENTORY_DRI.StockingUnits, INVENTORY_DRI.Location, 

                      INVENTORY_DRI.ID, INVENTORY_DRI.UnitWeight, INVENTORY_DRI.PartNumber, INVENTORY_DRI.UPC_SKU, INVENTORY_DRI.ItemType, 

                      INVENTORY_DRI.ReOrderQty, INVENTORY_DRI.PrefVendor, INVENTORY_DRI.OffsiteLocation, INVENTORY_DRI.InActive, INVENTORY_DRI.Offsite, 

                      INVENTORY_DRI.CostPerUnit, INVENTORY_DRI.DefPurch, INVENTORY_DRI.Location2

HAVING      (INVENTORY_DRI.ID = @Param1)

 

UPDATE COMMAND:

 

UPDATE    INVENTORY_DRI

SET              PartID = @PartID, PartName = @PartName, PartDescription = @PartDescription, UnitWeight = @UnitWeight, StockingUnits = @StockingUnits, 

                      PartNumber = @PartNumber, UPC_SKU = @UPC_SKU, ItemType = @ItemType, Location = @Location, Location2 = @Location2, 

                      ReOrderQty = @ReOrderQty, PrefVendor = @PrefVendor, InActive = @InActive, Offsite = @Offsite, OffsiteLocation = @OffsiteLocation, 

                      CostPerUnit = @CostPerUnit, DefPurch = @DefPurch, PartBalance = @PartBalance

WHERE     (ID = @Original_ID) AND (PartID = @Original_PartID) AND (@IsNull_PartName = 1 AND PartName IS NULL OR

                      PartName = @Original_PartName) AND (@IsNull_PartDescription = 1 AND PartDescription IS NULL OR

                      PartDescription = @Original_PartDescription) AND (@IsNull_UnitWeight = 1 AND UnitWeight IS NULL OR

                      UnitWeight = @Original_UnitWeight) AND (@IsNull_StockingUnits = 1 AND StockingUnits IS NULL OR

                      StockingUnits = @Original_StockingUnits) AND (@IsNull_PartNumber = 1 AND PartNumber IS NULL OR

                      PartNumber = @Original_PartNumber) AND (@IsNull_UPC_SKU = 1 AND UPC_SKU IS NULL OR

                      UPC_SKU = @Original_UPC_SKU) AND (@IsNull_ItemType = 1 AND ItemType IS NULL OR

                      ItemType = @Original_ItemType) AND (@IsNull_Location = 1 AND Location IS NULL OR

                      Location = @Original_Location) AND (@IsNull_Location2 = 1 AND Location2 IS NULL OR

                      Location2 = @Original_Location2) AND (@IsNull_ReOrderQty = 1 AND ReOrderQty IS NULL OR

                      ReOrderQty = @Original_ReOrderQty) AND (@IsNull_PrefVendor = 1 AND PrefVendor IS NULL OR

                      PrefVendor = @Original_PrefVendor) AND (@IsNull_InActive = 1 AND InActive IS NULL OR

                      InActive = @Original_InActive) AND (@IsNull_Offsite = 1 AND Offsite IS NULL OR

                      Offsite = @Original_Offsite) AND (@IsNull_OffsiteLocation = 1 AND OffsiteLocation IS NULL OR

                      OffsiteLocation = @Original_OffsiteLocation) AND (@IsNull_CostPerUnit = 1 AND CostPerUnit IS NULL OR

                      CostPerUnit = @Original_CostPerUnit) AND (@IsNull_DefPurch = 1 AND DefPurch IS NULL OR

                      DefPurch = @Original_DefPurch) AND (@IsNull_PartBalance = 1 AND PartBalance IS NULL OR

                      PartBalance = @Original_PartBalance)

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Question by:vwalla
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by:vwalla
ID: 24071579
ok.  I removed Optimistic concurrency checking & it works.  Still would like to know exactly why this would happen.
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Accepted Solution

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Raja Jegan R earned 500 total points
ID: 24075505
Your UPDATE query involves lots of where conditions which will take more time to filter out your required records.
To make the UPDATE query perform faster:
1. You can make the transaction bound for that UPDATE query to be smaller.
2. Appropriate INDEX to reduce the UPDATE queries time.

Above steps will bring down your Concurrency related issues and obviously Deadlocks.
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