SQL Server Deadlock Analysis is a capability of SentryOne database monitoring products that helps DBAs find and fix SQL Server deadlocks, which are situations in which two or more tasks block each other by having a "lock" on a resource needed complete the task. By using SentryOne SQL Sentry, you can quickly resolve deadlocks and improve SQL Server performance.
Resolving SQL Server deadlocks can be a frustrating, time-consuming process, especially if you're dealing with multiple complex deadlock scenarios. A typical deadlock situation unfolds in this way: One stored procedure has taken a lock on resource A (such as an object, page, or row) and is waiting on the other procedure before it can access resource B. But that procedure first took a lock on B and is now waiting on the first procedure to release its lock on A.
To break this downward spiraling cycle, you need to quickly identify and address the source of the deadlock. SQL Sentry, the flagship SentryOne monitoring product, gives you powerful tools for breaking through deadlocks and restoring peak performance.
The Deadlocks tab in SQL Sentry displays a complete view of deadlocks in your SQL Server database—including the processes and resources involved—with visual representations that accelerate the deadlock troubleshooting process.
With SQL Sentry Deadlock Analysis capabilities, you can:
SQL Sentry gives you all the information you need to identify, analyze, and resolve SQL Server deadlocks. With the right tools, you can save time and resources in breaking through deadlock problems and optimizing SQL Server performance.
In SQL Sentry and Plan Explorer, deadlock diagrams are simple and easy to read. The diagram is laid in an intuitive pattern (circular, by default), and you can easily view the relevant reference IDs with clear labeling.
You can select object nodes in the graphical representation to focus on that object in the gridview.
The Deadlock Graph in SQL Sentry displays deadlocks in an intuitive way to speed the troubleshooting process.
Deadlock playback functionality in SQL Sentry helps you analyze the events that led to the deadlock.
The deadlock playback capability helps you analyze the source of deadlocks by displaying the events that led to the deadlock. This functionality can help you reverse-engineer a deadlock.
With the playback, you can watch the diagram cycle through the events, which is like watching the deadlock happen again in real time.
Playback controls include the ability to skip forward, fast forward, rewind, change the playback speed, and zoom in or out on the deadlock graph.
Deadlock Analysis capabilities in SQL Sentry provide detailed metrics so you can resolve deadlocks, cutting the time you spend restoring your database to peak performance.
Deadlock Analysis in SQL Sentry gives you the details you need to resolve SQL Server deadlocks.
The lock details area breaks down the deadlock by specific lock types, including owners and waiters involved in each lock.