从 C#/ASP.NET 调用存储过程时出错

以下存储过程pr_generate_sales_order数据库 DB1 的 2 个表中生成记录 SO Header & SO Detail。然后，它将 SO 标头和详细信息记录从 DB1 导出到 DB2。

每当我尝试从 C# 调用此 SP ASP.Net/时，都会生成以下错误消息：名称为"c_customers"的游标不存在，并且不会在数据库中创建任何记录。

但是，如果我在 SSMS 中pr_generate_sales_order直接执行此存储过程，那么它可以正常工作，并在 DB1 和 DB2 中生成记录。

问题出在哪里？ 它是否与开始尝试捕获有关... ???

USE [DB1]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- ------------------------------------------------------------------------------------
-- Name: pr_generate_sales_order
-- ------------------------------------------------------------------------------------
-- Parameters: 
--    - N/A
--
-- Description: 
--    Generate Sales Order in DB1 & DB2
-- ------------------------------------------------------------------------------------
alter procedure [dbo].[pr_generate_sales_order] () as
Begin
-- --------------------------------------------------------------------------------
-- Variable declaration
-- --------------------------------------------------------------------------------
Declare @v_error_number             nvarchar(10)
Declare @v_error_message_en         nvarchar(1000)
Declare @v_customer_id              int
Declare @v_time_log_id              int
Declare @v_hourly_rate              numeric(18, 5)
Declare @v_total_time               numeric(18, 5)
Declare @v_description              nvarchar(max)
Declare @tmp_time_log Table
(
    time_log_id                     int,
    customer_id                     int,
    sku_id                          int,
    hourly_rate                     numeric(18, 5),
    hours                           int,
    minutes                         int
)

-- --------------------------------------------------------------------------------
-- Main program
-- --------------------------------------------------------------------------------
Set @v_error_number = '0'
Set @v_error_message_en = ''

Begin Try
    Begin Transaction T1

    -- ------------------------------------------------------------------------
    -- 
    -- ------------------------------------------------------------------------
    Insert Into @tmp_time_log
    Select      tl.time_log_id                          as time_log_id
                , tl.customer_id                        as customer_id
                , tl.sku_id                             as sku_id       -- 24/09/2013
                , tl.hourly_rate                        as hourly_rate
                , tl.hours_rounded                      as hours_rounded
                , tl.minutes_rounded                    as minutes_rounded
    From        time_log tl
    Where       tl.transaction_date between '2013-01-06' and getdate() 

    -- ------------------------------------------------------------------------
    -- Open Cursor
    -- ------------------------------------------------------------------------
    -- ------------------------------------------------------------------------
    -- Declare Customer Cursor: Get the list of Customer
    -- ------------------------------------------------------------------------
    Declare c_customers cursor for 
    Select      distinct IsNull(customer_id, 0)
    From        @tmp_time_log
    Open c_customers
    Fetch Next From c_customers Into @v_customer_id
    While @@fetch_status = 0
    Begin
        -- ----------------------------------------------------------------
        -- Create Sales Order Header for each Customer
        -- ----------------------------------------------------------------
        Insert Into sales_order_header ...
        -- Get Sales Order Header Id
        Set @v_sales_order_header_id = scope_identity()

        -- ----------------------------------------------------------------
        -- Declare Time Log Cursor: Get the list of Time Log by customer in order to Create 
        -- ----------------------------------------------------------------
        Declare c_time_log cursor for 
        Select      time_log_id                     as time_log_id
                    , hourly_rate                   as hourly_rate
                    , cast( (cast(tl.hours as numeric(18, 5)) + (cast(tl.minutes as numeric(18, 5)) / 60) ) as numeric(18, 5))       
                                                    as total_time
                    , sku_id                        as sku_id
        From        @tmp_time_log tl
        Where       customer_id = @v_customer_id
        -- ----------------------------------------------------------------
        -- Open Cursor
        -- ----------------------------------------------------------------
        Open c_time_log
        Fetch Next From c_time_log 
        Into @v_time_log_id, @v_hourly_rate, @v_total_time, @v_sku_id
        While @@fetch_status = 0
        Begin
            -- Create Sales Order Detail for Each SO Header
            Insert Into sales_order_detail ....

            -- Get the next Cursor
            Fetch Next From c_time_log Into @v_time_log_id, @v_hourly_rate, @v_total_time, @v_sku_id
        End

        -- Close & Deallocate Cursor
        Close c_time_log
        Deallocate c_time_log

        -- Get the next Cursor
        Fetch Next From c_customers  Into @v_customer_id
    End
    -- Close & Deallocate Cursor
    Close c_customers
    Deallocate c_customers

    -- ------------------------------------------------------------------------
    -- Export Sales Order Header & Detail From DB1 to DB2
    -- ------------------------------------------------------------------------
    Exec [DB2].[dbo].[pr_import_sales_order_from_db1]

    --  
    Commit Transaction T1
End Try
Begin Catch
    -- If Error Found Then Rollback Transaction
    If @@TRANCOUNT > 0
    Begin
        -- Close & Deallocate Cursor
        Close c_customers
        Deallocate c_customers

        -- Rollback         
        Rollback Transaction T1
    End
    -- Get Error # & Error Message  
    Select  @v_error_number = ERROR_NUMBER()
            , @v_error_message_en = 'An error occurred in ' + ERROR_PROCEDURE() + ': ' + ERROR_MESSAGE()
    GOTO Step_END
End Catch
-- ------------------------------------------------------------------------------------------
-- Return: Error # & Error message
-- ------------------------------------------------------------------------------------------
STEP_END:
    Select  @v_error_number                 as error_number  
            , @v_error_message_en           as error_message_en
End
GO

exec [DB2].[dbo].[pr_import_sales_order_from_db1]**  //are those asterisks there in your code

Close c_customers
Deallocate c_customers
Exec [DB2].[dbo].[pr_import_sales_order_from_db1]
Commit Transaction T1

Exec [DB2].[dbo].[pr_import_sales_order_from_db1]
Close c_customers
Deallocate c_customers
Commit Transaction T1