If you can’t, simply add those events as well, but be aware that your trace log can fill up pretty fast if you do. From that, you can hopefully deduce what procedure or queries to tune. Once you find deadlock events, you can view the dependency graph in Profiler to find out which objects were involved. A lot of people will tell you that a long-running trace takes a lot more resources if it runs interactively in Profiler than as a background trace, but I haven’t verified this myself. Just remember to stop your server-side trace once you’re done. You can run this trace interactively (with the Profiler window open) or in the background, as a server-side trace if you want to keep logging for a longer time. Start off from a blank template, then, under “Locks”, check the “Deadlock graph”, “Lock: Deadlock” and “Lock: Deadlock Chain” events. Using SQL Server Profiler to identify deadlocksĪ trace in SQL Server Profiler can give you details as to what objects are deadlocked. However, wer’re going to limit our scope to the most common kind, database objects. In the example above, the objects of the deadlock are two rows in the same table, but the object of a deadlock can be a number of different things – tables, pages, rows, schemas, locks, even chunks of memory or worker threads. The killed process, known as the deadlock victim, receives the following error message: Msg 1205, Level 13, State 51, Line 1 Transaction (Process ID 73) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. ![]() This is where the deadlock monitor, a system process in SQL Server, steps in an kills (rolls back) the process that has done the least amount of work. In the end, both Alice and Bob are waiting for each other to complete their respective transactions, and they could technically wait forever.
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