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The Activity and Blocking chart shows the total number of active sessions on your monitored SQL Server instance and any blocking or deadlocks that may occur between sessions.
Metric | Why it is important |
|---|---|
Active | Indicates the number of active sessions on the SQL Server instance. |
Indicates the number of sessions on the SQL Server instance being blocked by other sessions holding requested locks. | |
Lead Blockers | Indicates sessions that block at least one session, which can then block other sessions. |
Total Deadlocks | Indicates the total number of deadlocks on the SQL Server instance. A deadlock has no lead blocker and is circular in nature. |
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SQL Diagnostic Manager identifies and resolves SQL Server performance problems before they happen. Learn more > > |