Question

我有这个存储过程，如果我手动执行它。但有时我会在运行此存储过程时看到超时异常。这是由于MERGE，http://www.mssqltips.com/sqlservertip/3074/use-caution-with-sql-servers-merge-statement/

ALTER PROCEDURE [dbo].[InsertOrUpdateMobileUser]
(
    @ID BIGINT
    ,@Name NVARCHAR(255)
)
AS
BEGIN



    SET NOCOUNT ON;
    DECLARE @TranCount INT;
    SET @TranCount = @@TRANCOUNT;

    BEGIN TRY
        IF @TranCount = 0
            BEGIN TRANSACTION
        ELSE
            SAVE TRANSACTION InsertOrUpdateMobileUser;

        MERGE INTO MobileUsers MU
        USING (SELECT @ID AS ID) T ON (MU.ID = T.ID)
        WHEN MATCHED THEN
            UPDATE SET [Name] = CASE WHEN @Name IS NULL OR @Name = '' THEN [Name] ELSE @Name END                                    
        WHEN NOT MATCHED THEN
            INSERT ([Name])
            VALUES (@Name)

            SELECT   *                                  
            FROM     MobileUsers
            WHERE    ID = @ID;

LBEXIT:
        IF @TranCount = 0
            COMMIT;
        END TRY
    BEGIN CATCH
        DECLARE @Error INT, @Message VARCHAR(4000), @XState INT;
        SELECT  @Error = ERROR_NUMBER() ,@Message = ERROR_MESSAGE() ,@XState = XACT_STATE();

        IF @XState = -1
            ROLLBACK;
        IF @XState = 1 AND @TranCount = 0
            rollback
        IF @XState = 1 AND @TranCount > 0
            ROLLBACK TRANSACTION InsertOrUpdateMobileUser;

        RAISERROR ('InsertOrUpdateMobileUser: %d: %s', 16, 1, @error, @message) ;
    END CATCH
END

Answer 1

您可以区分两种执行方法。它们究竟是什么？你的意思是，如果只运行程序的代码它是有效的，并且当你执行proc时它不起作用？它通过EXECUTE工作，并在工作中失败？

超时仅涉及客户端应用程序。您在.NET中有SqlCommand .CommandTimeout属性，而在Management Studio中有Tools＆gt; Options＆gt; Query Execution＆gt; Command Timeout。如果你有一份工作，那么它应该无限运行，甚至没有选择在Sql Server Agent中设置超时。

执行存储过程时有时会发生超时

1 个答案: