問(wèn)題描述
這個(gè)問(wèn)題與:Debezium 如何使用 Kafka Connect 正確注冊(cè) SqlServer 連接器 - 連接被拒絕
在 Windows 10 中，我在 Docker 容器外部的 Microsoft SQL Server 實(shí)例上運(yùn)行 Debezium.我每 390 毫秒收到以下警告:
In Windows 10, I have Debezium running on an instance of Microsoft SQL Server that is outside of a Docker container. I am getting the following warning every 390 milliseconds:
數(shù)據(jù)庫(kù)中沒(méi)有記錄最大LSN；請(qǐng)確保 SQL服務(wù)器代理正在運(yùn)行
[io.debezium.connector.sqlserver.SqlServerStreamingChangeEventSource]
No maximum LSN recorded in the database; please ensure that the SQL Server Agent is running
[io.debezium.connector.sqlserver.SqlServerStreamingChangeEventSource]
我在 Github 上檢查了 Debezium 的代碼，唯一能找到此警告的地方在代碼注釋中指出，只有在 Agent 未運(yùn)行時(shí)才應(yīng)拋出此警告.我已確認(rèn) SQL Server 代理正在運(yùn)行.
I checked Debezium's code on Github and the only place that I can find this warning states in the code comments that this warning should only be thrown if the Agent is not running. I have confirmed that the SQL Server Agent is running.
為什么會(huì)出現(xiàn)此警告，我該如何解決?
Why is this warning showing up and how do I fix it?
注意:
我當(dāng)前的解決方案似乎只適用于非生產(chǎn)環(huán)境 - 根據(jù) Docker 的文檔.
My current solution appears to only work in a non-production environment - per Docker's documentation.
推薦答案
LSN 是與 SQL Server 更改相關(guān)的片段"信息.如果您沒(méi)有 LSN，則可能是您的 CDC 未運(yùn)行或未正確配置.Debezium 使用 LSN 進(jìn)行復(fù)制，因此您的 SQL Server 需要生成它.
LSN is the "pieces" of information related about your SQL Server changes. If you don't have LSN, is possible that your CDC is not running or not configured properly. Debezium consumes LSNs to replicate so, your SQL Server need to generate this.
一些方法:
- 您是否檢查過(guò)您的表是否啟用了 CDC?這將列出啟用 CDC 的表:
SELECT s.name AS Schema_Name, tb.name AS Table_Name
, tb.object_id, tb.type, tb.type_desc, tb.is_tracked_by_cdc
FROM sys.tables tb
INNER JOIN sys.schemas s on s.schema_id = tb.schema_id
WHERE tb.is_tracked_by_cdc = 1
- 您的 CDC 數(shù)據(jù)庫(kù)已啟用并運(yùn)行?(參見(jiàn) 這里)
檢查是否啟用:
SELECT *
FROM sys.change_tracking_databases
WHERE database_id=DB_ID('MyDatabase')
并檢查是否正在運(yùn)行:
EXECUTE sys.sp_cdc_enable_db;
GO
- 您的 CDC 服務(wù)是否在 SQL Server 上運(yùn)行?請(qǐng)參閱 在文檔中
EXEC sys.sp_cdc_start_job;
GO
- 在 CDC 中啟用表時(shí)，我在使用角色名稱(chēng)時(shí)遇到了一些問(wèn)題.就我而言，在
null處配置解決了我的問(wèn)題(更多詳細(xì)信息 此處)
- On enabling table in CDC, I had some issues with rolename. For my case, configuring at
nullsolved my problem (more details here)
EXEC sys.sp_cdc_enable_table
@source_schema=N'dbo',
@source_name=N'AD6010',
@capture_instance=N'ZZZZ_AD6010',
@role_name = NULL,
@filegroup_name=N'CDC_DATA',
@supports_net_changes=1
GO
這篇關(guān)于Debezium:數(shù)據(jù)庫(kù)中沒(méi)有記錄最大LSN；請(qǐng)確保 SQL Server 代理正在運(yùn)行的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！