By default Replication is configured to purge historical data older then 48 hours. For troubleshooting, its nice to pause or postpone purging of replication agent historical data. To change the History Cleanup settings use SQL Server Management Studio, alt-click “Replication” folder and select “Distributor Properties”.
The Distribution database is a cache of undistributed commands that the Distribution SQL Agent jobs are responsible to deliver to their subscribers. This cache is populated by the Publisher LogReader Agent job as new data changes are detected. The primary tables holding the cache of undistributed data is MSrepl_transactions and MSrepl_commands.
By Taiyeb Zakir, Microsoft SQL Escalation Services Consider the following scenario: Distribution cleanup Job is running and you see that number of rows in msrepl_commands and msrepl_transactions are reducing but the Cleanup Job history says 0 rows deleted: For example: Removed 0 replicated transactions consisting of 0 statements in 12961 seconds (0 rows/sec). [SQLSTATE
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Abstract Many technology solutions use a STORE and FORWARD model to move data though out the business. It begins when source data change is detected, collected, and STORED in a cache. This cache data, often on a schedule, is processed and FORWARD to one or more destinations. Microsoft technologies using “store and forward” include Log
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Sateesh Yele Microsoft SQL Server Support Symptom: The Distribution Clean up job fails with the following error. Executed as user: Domainname\Username. Could not remove directory ‘C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\ReplData\unc’. Check the security context of xp_cmdshell and close other processes that may be accessing the directory. [SQLSTATE 42000] (Error 20015). The step failed. Consider the following
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