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This PowerShell script will check if system_health session has incorrect map keys in SQL Server 2012.
Every SQL Server instance has a default extended event session created with the name system_health. This session captures information about the wait_info and wait_info_external events. The current definition of the system_health session contains incorrect map_key specified for the wait_types of interest. Use the information from the knowledge base article to correct the extended event session definition.
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