how to fix error 1205 on mssql 2022

1205 e 824 sono due errori molto differente.

1205 è deadlock, e por risolvare un deadlock, bisogna por il primo analisare il deadlock XML. In fatto, ho un presentazione de questo sogetto, e possible di vedere a YouTube: https://www.youtube.com/watch?v=jZW4_MLLRdM

824 al altra parte indica un problema con la sistema de I\O. Es una problema critica, e bisogna di fare DBCC CHECK, e fare investigazione del hardware. Se è possible, transferare il baso de dato a un altra server.

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1205 and 824 are two very different errors.

1205 is deadlock, and to resolve a deadlock, you must first analyse the deadlock XML. As it happens, I have a presentation on this very topic that you can watch on YouTube: https://www.youtube.com/watch?v=jZW4_MLLRdM.

824, on the other hand, indicate serious problems with your I/O subsystem. It's a critical issue, and you should run DBCC CHECKDB to see if the database is OK, and if not restore from a clean backup. Preferably, you should restore the database to another server, since corruption is likely to come back.

To fix error 1205 in SQL Server, which indicates a deadlock situation, you can follow these steps:

1. Identify Deadlocks: Enable trace flag 1222 to log deadlock information into the SQL Server Error Log. This will help you understand which processes are involved in the deadlock.
2. Check Row Count: The MSreplication_subscriptions system table may have a high row count, potentially leading to deadlocks. You can check the row count using SQL Server Management Studio or by running the following query:

      SELECT rows, * FROM sys.partitions WHERE object_id = object_id('MSreplication_subscriptions')
   

3. Optimize Transactions: Review your transactions to ensure they are as short as possible. Long-running transactions are more likely to cause deadlocks.
4. Adjust Distribution Agents: If you have multiple publishers replicating to the same subscriber database, consider adjusting the frequency of the distribution agents to reduce contention.
5. Monitor and Tune Queries: Analyze the queries involved in the deadlock and optimize them for performance. This may involve adding indexes or rewriting queries to reduce locking.
6. Implement Retry Logic: Since deadlocks are sometimes unavoidable, implement retry logic in your application to handle deadlock errors gracefully.

If you are also encountering error 824 after these deadlocks, it indicates a logical consistency-based I/O error. You should perform a consistency check using the DBCC CHECKDB command and follow the recommended resolutions for error 824.

References:

• Error 1205 when you configure transactional replication
• MSSQLSERVER_824