August 2012
Intermediate to advanced
1416 pages
33h 39m
English
book
Microsoft SQL Server 2012 Bible
by Adam Jorgensen, Jorge Segarra, Patrick LeBlanc, Jose Chinchilla, Aaron Nelson
Content preview from Microsoft SQL Server 2012 Bible
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The system_health Session
The system_health session is a predefined Extended Events session that collects system data to help troubleshoot issues in the Database Engine. The session collections information associated with high-severity errors, deadlocks, nonyielding scheduler problems, and sessions that have had to wait a long time for locks or preemptive (OS) waits. This session starts when SQL Server starts and outputs data to a ring buffer as well as a file on the file system. You can disable or modify this session, but it is recommended that you do not because it can trap a lot of useful information that can be used to troubleshoot and fix SQL Server problems.
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