SQL Session Activity Test
This test monitors the sessions initiated by each application on the Microsoft SQL server, and reports the level of activity each application has imposed on the server. This test has been disabled by default. To enable this test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick Microsoft SQL as the Component type, Performance as the Test type, choose this test from the disabled tests list, and click on the << button to move the test to the ENABLED TESTS list. Finally, click the Update button.
Target of the test : A Microsoft SQL server
Agent deploying the test : An internal agent
Outputs of the test : One set of results for each application using the Microsoft SQL server instance being monitored
|
Measurement | Description | Measurement Unit | Interpretation |
---|---|---|---|
Number of processes: |
Indicates the total number of processes executed currently by this application on the server. |
Number |
The detailed diagnosis of this measure is used to view the complete details of the session. This includes the session ID, the user who has initiated the session, the current status of the session, the elapsed time, CPU time, open cursor count,active request count,blocking/blocked request count, the count of disk reads and writes, and the count of logical reads performed by the session. These information enables you to know how resource intensive the session is and how much I/O load has been generated by the session. |
Open transaction count: |
Indicates the total number of transaction executed currently by the application on the server. |
Number |
In terms of a server overload, you can compare the value of this measure across the applications to identify the sessions that are responsible for increasing the transaction load on the server. |
Open cursor count: |
Indicates the total number of cursors executed currently by the application on the server. |
Number |
In terms of a server overload, you can compare the value of this measure across the applications to identify the sessions that are responsible for increasing the transaction load on the server. |
Active request count: |
Indicates the rate at which the application is sending requests to the server. |
Reqs/Sec |
|
Blocking request count: |
Indicates the number of requests of this application that are currently being blocked. |
Number |
Ideally, the value of this measure should be 0. If the measure reports a non-zero value, then you can use the detailed diagnosis of the Blocked processes measure of the SQL System Processes test to identify the exact query that is responsible for the blocking. |
Open resultset count: |
Indicates the number of resultsets that are currently open on the server for this application. |
Number |
|
Blocked request count: |
Indicates the number of requests of the application that are currently blocking. |
Number |
Ideally, the value of this measure should be 0. If the measure reports a non-zero value, then you can use the detailed diagnosis of the Blocked processes measure of the SQL System Processes test to identify the exact query that is responsible for the blocking. |