SQL error "Undefined transaction detected at end of batch" without transactions on db

Question

I am facing the following problem at different points in my code. The SqlException is returned from the database (SQL Server) with the message "Uncommitable Transaction detected at the end of the packet", after which the transaction is completed after the stored procedure is called. The structure of the stored procedure follows this example:

USE [EXAMPLE_DB]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[sp_ExampleStoredProcedure]
@Parameter INT, @AnotherParameter INT

AS
BEGIN
    BEGIN TRY

    SET NOCOUNT ON;


    DECLARE @Variable INT;
    DECLARE @AnotherVariable CHAR;
    DECLARE @ErrMsg VARCHAR;

    SET @ErrMsg = '';

    /*Doing Some Stuff Here (Select, IF-THEN, etc...)

            /* I call another stored procedure */   
            EXECUTE [dbo].[sp_SecondStoredProcedure] 
                       @Param = 'Blabla'
                      ,@Param2 = 'BlaBlaBla'


            /*Here I handle some custom output parameters from second stored                           
                     procedure to handle errors */



                    /* Other stuff here */

END TRY

BEGIN CATCH    
        SET @CustomExitCode = 'XXXXX';
        SET @ErrMsg = (SELECT ERROR_MESSAGE()); 
END CATCH;

END

As you can see, there is no transaction processing inside the stored procedure. I process the transactional code side (C #) using the TransactionScope class, invoking various stored procedures inside the transaction scope, including the one above (which is an error).

: SQL Uncommitable Transaction, SQL-, try-catch, , , ?

Uncommittable Transaction, SQL-.

, . , , .

!

Cheers,

Answer 1

TRY BLOCK sql , . BEGIN TRAN COMMIT Trans Try Block, - , .

- ......

ALTER PROCEDURE [dbo].[sp_ExampleStoredProcedure]
@Parameter INT, @AnotherParameter INT
AS
BEGIN
    SET NOCOUNT ON;
 BEGIN TRY
    DECLARE @Variable INT;
    DECLARE @AnotherVariable CHAR;
    DECLARE @ErrMsg VARCHAR;

    SET @ErrMsg = '';
BEGIN TRANSACTION;      --<-- Begin here 

    /*Doing Some Stuff Here (Select, IF-THEN, etc...)*/

            /* I call another stored procedure */   
            EXECUTE [dbo].[sp_SecondStoredProcedure] 
                       @Param = 'Blabla'
                      ,@Param2 = 'BlaBlaBla'
            /*Here I handle some custom output parameters from second stored                           
                     procedure to handle errors */

                    /* Other stuff here */
COMMIT TRANSACTION;     --<-- Commit here if nothing gone wrong

END TRY

BEGIN CATCH    
  IF (@@TRANCOUNT > 0)
   BEGIN
      ROLLBACK TRANSACTION;   --<-- Rollback if something went wrong
   END

           /*Other error logging here*/
        SELECT @CustomExitCode = 'XXXXX', @ErrMsg = ERROR_MESSAGE(); 
END CATCH;

END