sqlserver监控阻塞(死锁)具体情况

  公司sqlserver的监控系统主要是采用zabbix监控,但是zabbix的监控只能通过性能计数器给出报警,而无法给出具体的阻塞情况,比如阻塞会话、语句、时间等,所以需要配合sqlserver的一些特性来进行监控,这里给出一个方案:

  1.创建阻塞日志表,用于记录阻塞情况

  2.新建作业,用于将阻塞情况记录到阻塞日志表中,并发送邮件(如果没有配置邮件,或者不需要发送邮件,可以忽略此步骤)

  3.创建警报,当阻塞大于阈值时,触发上面作业

  在数据库阻塞值大于阈值时,在原有zabbix的监控上,将阻塞报警以短信和邮件方式发送给dba,同时将阻塞信息记录到阻塞记录表中,将阻塞的具体信息通过邮件形式发送给aba,帮助dba进行系统诊断。

  查询阻塞情况依赖于以下sql:

复制代码
--查询阻塞
SELECT  R.session_id AS BlockedSessionID ,  
        S.session_id AS BlockingSessionID ,  
        Q1.text AS BlockedSession_TSQL ,  
        Q2.text AS BlockingSession_TSQL ,  
        C1.most_recent_sql_handle AS BlockedSession_SQLHandle ,  
        C2.most_recent_sql_handle AS BlockingSession_SQLHandle ,  
        S.original_login_name AS BlockingSession_LoginName ,  
        S.program_name AS BlockingSession_ApplicationName ,  
        S.host_name AS BlockingSession_HostName  
FROM    sys.dm_exec_requests AS R  
        INNER JOIN sys.dm_exec_sessions AS S ON R.blocking_session_id = S.session_id  
        INNER JOIN sys.dm_exec_connections AS C1 ON R.session_id = C1.most_recent_session_id  
        INNER JOIN sys.dm_exec_connections AS C2 ON S.session_id = C2.most_recent_session_id  
        CROSS APPLY sys.dm_exec_sql_text(C1.most_recent_sql_handle) AS Q1  
        CROSS APPLY sys.dm_exec_sql_text(C2.most_recent_sql_handle) AS Q2
复制代码

对sql进行测试,表t中只有一条数据。会话1中执行以下sql

sqlserver监控阻塞(死锁)具体情况_第1张图片

会话2执行sql后产生阻塞

用该sql查询的结果:

  对于该sql的字段很简单,blocked开头的表示被阻塞的,blocking表示阻塞的。

一.创建阻塞日志表,用于记录阻塞情况

复制代码
USE etcp_alert 
GO 
CREATE TABLE [dbo].[BlockLog]
    (
      Id INT IDENTITY(1, 1)
             NOT NULL
             PRIMARY KEY ,
      [BlockingSessesionId] [smallint] NULL ,
      [ProgramName] [nchar](128) NULL ,
      [HostName] [nchar](128) NULL ,
      [ClientIpAddress] [varchar](48) NULL ,
      [DatabaseName] [sysname] NOT NULL ,
      [WaitType] [nvarchar](60) NULL ,
      [BlockingStartTime] [datetime] NOT NULL ,
      [WaitDuration] [bigint] NULL ,
      [BlockedSessionId] [int] NULL ,
      [BlockedSQLText] [nvarchar](MAX) NULL ,
      [BlockingSQLText] [nvarchar](MAX) NULL ,
      [dt] [datetime] NOT NULL
    )
ON  [PRIMARY]
GO
复制代码

二、新建作业,用于将阻塞情况记录到阻塞日志表中,并发送邮件

  sqlserver监控阻塞(死锁)具体情况_第2张图片

  sqlserver监控阻塞(死锁)具体情况_第3张图片

在新建作业步骤中,选择数据库tempdb,并插入代码:

复制代码
SET NOCOUNT ON;
DECLARE @dt DATETIME= GETDATE();
 -- 阻塞时间
DECLARE @HtmlContent NVARCHAR(MAX);
 --邮件发送的阻塞日志(表格形式)

IF OBJECT_ID('tempdb.dbo.#BlockLog') IS NOT NULL 
    DROP TABLE #BlockLog;     
--将当前日志记录插入临时表
BEGIN  
    SELECT  wt.blocking_session_id AS BlockingSessesionId ,
            sp.program_name AS ProgramName ,
            COALESCE(sp.LOGINAME, sp.nt_username) AS HostName ,
            ec1.client_net_address AS ClientIpAddress ,
            db.name AS DatabaseName ,
            wt.wait_type AS WaitType ,
            ec1.connect_time AS BlockingStartTime ,
            wt.WAIT_DURATION_MS / 1000 AS WaitDuration ,
            ec1.session_id AS BlockedSessionId ,
            h1.TEXT AS BlockedSQLText ,
            h2.TEXT AS BlockingSQLText ,
            @dt dt
    INTO    #BlockLog
    FROM    sys.dm_tran_locks AS tl
            INNER JOIN sys.databases db ON db.database_id = tl.resource_database_id
            INNER JOIN sys.dm_os_waiting_tasks AS wt ON tl.lock_owner_address = wt.resource_address
            INNER JOIN sys.dm_exec_connections ec1 ON ec1.session_id = tl.request_session_id
            INNER JOIN sys.dm_exec_connections ec2 ON ec2.session_id = wt.blocking_session_id
            LEFT OUTER JOIN master.dbo.sysprocesses sp ON SP.spid = wt.blocking_session_id
            CROSS APPLY sys.dm_exec_sql_text(ec1.most_recent_sql_handle) AS h1
            CROSS APPLY sys.dm_exec_sql_text(ec2.most_recent_sql_handle) AS h2;         
--将临时表数据插入日志表
    INSERT  INTO etcp_alert.dbo.BlockLog
            ( BlockingSessesionId ,
              ProgramName ,
              HostName ,
              ClientIpAddress ,
              DatabaseName ,
              WaitType ,
              BlockingStartTime ,
              WaitDuration ,
              BlockedSessionId ,
              BlockedSQLText ,
              BlockingSQLText ,
              dt
            )
            SELECT  BlockingSessesionId ,
                    ProgramName ,
                    HostName ,
                    ClientIpAddress ,
                    DatabaseName ,
                    WaitType ,
                    BlockingStartTime ,
                    WaitDuration ,
                    BlockedSessionId ,
                    BlockedSQLText ,
                    BlockingSQLText ,
                    dt
            FROM    #BlockLog;
END;
--以html表格方式发送邮件,如果不发送邮件,则删除以下代码
BEGIN
    SET @HtmlContent = N''
        + N''
        + N'' + N'' + CAST(( SELECT  BlockingSessesionId AS TD ,
                                        '' ,
                                        ProgramName AS TD ,
                                        '' ,
                                        HostName AS TD ,
                                        '' ,
                                        ClientIpAddress AS TD ,
                                        '' ,
                                        DatabaseName AS TD ,
                                        '' ,
                                        WaitType AS TD ,
                                        '' ,
                                        BlockingStartTime AS TD ,
                                        '' ,
                                        WaitDuration AS TD ,
                                        '' ,
                                        BlockedSessionId AS TD ,
                                        '' ,
                                        BlockedSQLText AS TD ,
                                        '' ,
                                        BlockingSQLText AS TD ,
                                        '' ,
                                        dt AS Td ,
                                        ''
                                FROM    #BlockLog
                              FOR
                                XML PATH('tr') ,
                                    TYPE
                              ) AS NVARCHAR(MAX)) + N'
BlockingSessesionId ProgramName HostName ClientIpAddress DatabaseName WaitType BlockingStartTime WaitDuration BlockedSessionId BlockedSQLText BlockingSQLText dt
'; IF @HtmlContent IS NOT NULL BEGIN DECLARE @ProfileName VARCHAR(100)= 'db_mail'; --邮箱公用账户名称 DECLARE @RecipientsLst VARCHAR(100)= '[email protected]'; --收件人,以";"分隔 DECLARE @subject VARCHAR(100)= '数据库阻塞警报'; --主题 EXEC msdb.dbo.sp_send_dbmail @profile_name = @ProfileName, @recipients = @RecipientsLst, @subject = @subject, @body = @HtmlContent, @body_format = 'HTML'; END; begin DROP TABLE #BlockLog; END; END;
复制代码

注意,如果没有配置邮箱账号,需要配置邮箱功能,如下:

sqlserver监控阻塞(死锁)具体情况_第4张图片

三、创建警报,当阻塞大于阈值时,触发上面作业

名称:可根据实际自行命名,这里我用数据库阻塞报警
类型:选择"SQL Server性能条件警报"
对象:SQLServer:General Statistics
计数器:Processes blocked
计数器满足以下条件时触发警报:高于
值:2,根据系统具体定

sqlserver监控阻塞(死锁)具体情况_第5张图片

在"响应"中配置,一定将执行作业指向上面创建的job

sqlserver监控阻塞(死锁)具体情况_第6张图片

四、测试

为了测试方便,我将报警阈值调整为高于0个,即当1个阻塞发生时就会触发对应的job,还是采用之前的两个会话,查看报警。

邮箱收到报警:

sqlserver监控阻塞(死锁)具体情况_第7张图片

结果表已经插入数据:

sqlserver监控阻塞(死锁)具体情况_第8张图片

 

转:

https://www.cnblogs.com/datazhang/p/4773823.html

你可能感兴趣的:(sqlserver监控阻塞(死锁)具体情况)