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Blocked Process script for deadlock correction

By David A. Long,

This script was created to find an application problem that was causing SQL Server blocked processes. The BlockedProcess table is created to log both the blocker and blocked processes. The sp_BlockedProcess stored procedure is created to handle the situation by: inserting all processes affected by the blocking, notifying the blocking application user, emailing the admins with the logged information, and killing the blocking process. A scheduled Job should be created to EXEC the stored procedure to begin the monitoring process.

In my use I found that the Job should be scheduled to run every 2 minutes and only log processes that have been blocked for 120 seconds, that way the blocking can only exist for 4 minutes. This seemed the best trade off for business as usual and catching the information needed to debug the application.


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