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Check manual page of mssql_blocked_sessions

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MS SQL Server: Blocked Sessions

Distribution: official part of Check_MK
License: GPL
Supported Agents: Windows

This check lists all blocked sessions on a MSSQL Server. As long at least one session is blocked, it will be CRITICAL. This state is configurable with a default value of CRITICAL.

Alternatively you can configure thresholds for the SQL output "wait_duration_ms".

This check needs the Checkmk mssql.vbs -plugin installed in the agent. Please refer to the online documentation for how to install that plugin.


Either an empty string or the name of the MSSQL instance


One is created for each host.