Distribution Agent Error Details Dialog
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Troubleshooting Transactional Replication In Sql Server 2008
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Transactional Replication Issues
Business IntelligencePower BI SQL Server Analysis Services SQL Server Integration Services SQL Server sql server replication errors Reporting Services InfoCenters Advertisement Home > Database Administration > Troubleshooting Transactional Replication Troubleshooting Transactional Replication Three common transactional replication log reader agent in sql server replication problems solved May 9, 2010 Kendal Van Dyke | SQL Server Pro EMAIL Tweet Comments 8 Advertisement Transactional replication is a useful way to keep schema and data for specific objects https://msdn.microsoft.com/es-es/library/aa178842.aspx synchronized across multiple SQL Server databases. Replication can be used in simple scenarios involving a few servers or can be scaled up to complex, multi-datacenter distributed environments. However, no matter the size or complexity of your topology, the number of moving parts involved with replication means that occasionally problems will occur that require a DBA’s intervention to correct. In this article, I’ll show you http://sqlmag.com/database-administration/troubleshooting-transactional-replication how to use SQL Server’s native tools to monitor replication performance, receive notification when problems occur, and diagnose the cause of those problems. Additionally, I'll look at three common transactional replication problems and explain how to fix them. A View Into Replication Health Replication Monitor is the primary GUI tool at your disposal for viewing replication performance and diagnosing problems. Replication Monitor was included in Enterprise Manager in SQL Server 2000, but in SQL Server 2005, Replication Monitor was separated from SQL Server Management Studio (SSMS) into a standalone executable. Just like SSMS, Replication Monitor can be used to monitor Publishers, Subscribers, and Distributors running previous versions of SQL Server, although features not present in SQL Server 2005 won’t be displayed or otherwise available for use. To launch Replication Monitor, open SSMS, connect to a Publisher in the Object Explorer, right-click the Replication folder, and choose Launch Replication Monitor from the context menu. Figure 1 shows Replication Monitor with several registered Publishers added. Replication Monitor displays a tree view in the left pane that lists Publishers that have been registered; the right pane’s contents change depending on what
Stay up to date: Daily newsletters with brand new articles, scripts, editorials and a Question of the Day help you keep on top of SQL Server. Sign up No thanks Improve your SQL Server knowledge http://www.sqlservercentral.com/articles/Stairway+Series/72452/ daily with more articles by email. Sign up Thank this author by sharing: Rate this Join the discussion Add to briefcase Stairway to SQL Server Replication - Level 10: Troubleshooting By Sebastian Meine, 2012/04/18 The Series http://www.cryer.co.uk/brian/sqlserver/disagnt_cnidkriowui.htm This article is part of the Stairway Series: Stairway to SQL Server Replication SQL Replication can solve many problems in running database-driven applications. The publication/subscriber model isn't completely easy to understand, the complexities of scripting and monitoring replication sql server systems takes some thought. Here, at last, is a series of articles that takes care to produce a jargon-free approach to SQL Server Replication of all types. Level 10: Troubleshooting Troubleshooting replication can be a daunting task. There are a lot of moving parts involved in any replication setup and the tools available do not always make it simple to identify a problem. This last level of the Replication Stairway will show you the places that provide sql server replication the information necessary to solve most problems. Finding the Problem Level 9 of this Stairway introduced the Replication Monitor. If you enable all the warnings offered by that tool, it will warn you if something isn’t right. But often that is all the information you can get from that tool. And occasionally, even if you manage to find an actual error message, it is pointing in the wrong direction. To show you how to get more information we will walk through the troubleshooting process of some of the more common issues. For this example, we work with a transactional replication setup, with one subscriber, where the person who performed the set up forgot to grant any permission to the relevant Windows accounts, and their associated SQL Server logins. Publication When you open the Replication Monitor, you will see a lot of red error symbols indicating a problem with the publication, as shown in Figure 1. Drilling down to the Agents tab for the publication reveals that both agents are having a problem. Figure 1: Publication Agent Errors Selecting “View Details” in the context menu for the Log Reader Agent entry opens the details dialog, shown in Figure 2. Figure 2: Log Reader Agent Details As you can see, there is not a lot more information available here. However, the error message recommends checking out the “agent job histo
insert duplicate key row in object 'TTTT' with unique index 'IIII' where 'TTTT' is the name of a table and 'IIII' the name of a unique index of that table. Cause: A new row has been added at the publisher, however a row with the same key has also been added at the subscriber. When the distribution agent runs and tries to insert the new row at the subscriber it fails because a row with the same unique key already exists. Remedy Before attempting to remedy the problem first identify why the problem arose. Distribution agents are only used for Merge and Transaction replication. These are suitable only for propagating changes made at the publisher. Tables which are replicated in this way should not have changes made to them at the subscriber. Be aware that the offending row may have been added at the subscriber any time prior to the error first being noticed. The error will only manifest itself when a row with the same unique key is added to the publisher. This could be days, weeks or even years before. To resolve the problem: Identify the row at the subscriber with the same unique key. This is actually quite easy. Within SQL Server Enterprise Manager bring up the Distribution Agent Error Details dialog. This will show the 'Last command', which will be something like: {CALL sp_MSins_TTTT( ... values ...)} where 'TTTT' is the name of the table and '... values ...' is a comma separated list of values. These are the values that it attempted to insert and failed on. Comparing these values with the primary keys or unique constraints applied to the table should allow you to identify the offending row at the subscriber. Consider if the contents of the row should be incorporated into the table at the publisher. This is a business decision. Delete the row at the subscriber (and only that row). Restart the Publication Agent for that subscriber. It should now run successfully These notes are believed to be correct for SQL Ser