通过查询分发服务器来达到监控sqlserver复制的健康情况
第一步 获取分发服务器
SELECT
name as [Database name],
CASE is_published
WHEN 0 THEN 'No'
ELSE 'Yes'
END AS [Is Published],
CASE is_merge_published
WHEN 0 THEN 'No'
ELSE 'Yes'
END AS [Is Merge Published],
CASE is_distributor
WHEN 0 THEN 'No'
ELSE 'Yes'
END AS [Is Distributor],
CASE is_subscribed
WHEN 0 THEN 'No'
ELSE 'Yes'
END AS [Is Subscribed]
FROM sys.databases
WHERE database_id > 4
第二步 循环每一个分发库，执行下列操作，查询复制延迟情况
SELECT distinct a.publisher
,publication
,agent_name
,distdb
,[agent_type]
,[status]
,[lastrefresh]
,cur_latency
FROM [" + dbName + @"].[dbo].[MSreplication_monitordata] a WITH(NOLOCK)
WHERE publication_id IS NOT NULL
AND cur_latency IS NOT NULL
AND [time_stamp]>DATEADD(MINUTE,-{0},GETDATE())
AND ([cur_latency]>=10
OR ([agent_type] in(2,3)/*2 = 日志读取器代理,3 = 分发代理*/
AND [status] in(5,6)/*5= 正在重试,6= 失败*/));
第三步 检测分发错误消息
查询分发服务器，包含有扩展分发代理程序和合并代理程序失败信息的行
SELECT
publisher.name as publisher,
subscriber.name as subscriber,
--MSda.publication,
MSda.publisher_db,
--MSda.subscriber_db,
--MSre.error_code,
MSre.time,
MSre.error_text
FROM [{0}].[dbo].MSdistribution_history MSdh
INNER JOIN [{0}].[dbo].MSdistribution_agents MSda ON MSdh.agent_id = MSda.id
INNER JOIN [{0}].[dbo].MSrepl_errors MSre ON MSdh.error_id = MSre.id
INNER JOIN master.sys.servers publisher ON MSda.publisher_id = publisher.server_id
INNER JOIN master.sys.servers subscriber ON MSda.subscriber_id = subscriber.server_id
WHERE MSdh.error_id <> 0
and MSdh.time>DATEADD(MINUTE,-{1},GETDATE())
