Add a new alert template

Author: dimitri-furman

azure-sql/database-watcher-alerts.md

@@ -80,6 +80,7 @@ The following tables describe currently available alert rule templates for each
 | Workload patterns | Blocked requests | 1 - Error | 5 minutes | Alerts if there is a minimum number of blocked requests in a database that have been waiting longer than a certain duration. |
 | Workload patterns | Deadlock spike | 3 - Informational | 5 minutes | Alerts if the number of deadlocks in a database exceeds a threshold. |
 | Workload patterns | Lock wait spike | 2 - Warning | 5 minutes | Alerts if the cumulative wait time for locks in a database exceeds a threshold. |
+| Workload patterns | Long active transactions | 3 - Informational | 5 minutes | Alerts if there active transactions where transaction duration exceeds a threshold. |
 | Workload patterns | Memory wait spike | 3 - Informational | 5 minutes | Alerts if the cumulative wait time for memory in a database exceeds a threshold. |
 | Workload patterns | Network IO wait spike | 3 - Informational | 5 minutes | Alerts if the cumulative wait time for network IO in a database exceeds a threshold. |
 | Workload patterns | Request rate drop | 3 - Informational | 5 minutes | Alerts if the request rate in a database dropped significantly. |
@@ -120,6 +121,7 @@ The following tables describe currently available alert rule templates for each
 | Workload patterns | Blocked requests | 1 - Error | 5 minutes | Alerts if there is a minimum number of blocked requests on an instance that have been waiting longer than a certain duration. |
 | Workload patterns | Deadlock spike | 3 - Informational | 5 minutes | Alerts if the number of deadlocks on an instance exceeds a threshold. |
 | Workload patterns | Lock wait spike | 2 - Warning | 5 minutes | Alerts if the cumulative wait time for locks on an instance exceeds a threshold. |
+| Workload patterns | Long active transactions | 3 - Informational | 5 minutes | Alerts if there active transactions where transaction duration exceeds a threshold. |
 | Workload patterns | Memory wait spike | 3 - Informational | 5 minutes | Alerts if the cumulative wait time for memory on an instance exceeds a threshold. |
 | Workload patterns | Network IO wait spike | 3 - Informational | 5 minutes | Alerts if the cumulative wait time for network IO on an instance exceeds a threshold. |
 | Workload patterns | Request rate drop | 3 - Informational | 5 minutes | Alerts if the request rate on an instance dropped significantly. |