| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Availability |
Indicates the availability of the server to execute a user query. |
Percent |
The availability is 100% when the server does respond to a request and 0% when it is not. Availability problems may be caused by a misconfiguration / malfunctioning of the database server, or if the server has not been started.
Besides the above, this measure will report that the server is unavailable even if a connection to the database instance is unavailable, or if a query to the database fails. In this case, you can check the values of the MySqlConAvailable and MySqlQryAvailable measures to know what is exactly causing the database instance to not respond to requests - is it owing to a connection unavailability? or is it due to a query failure? |
| Conn_time |
Indicates the time taken to connect to the database server. |
Secs |
A dramatic increase in this value may be because the server has reached its connection handling capacity. |
| Statement_exec_time |
Indicates the time taken to execute a database query. |
Secs |
A dramatic increase in this value could indicate a processing bottleneck with the database server. |
| Response_time |
Indicates the time taken by the database server to respond to a user query. This is the sum of the Conn_time and Statement_exec_time measures. |
Secs |
A sudden increase in response time is indicative of a bottleneck with the database server. |
| MySqlConAvailable |
Indicates whether the database connection is available or not. |
Percent |
If this measure reports the value 100 , it indicates that the database connection is available. The value 0 on the other hand indicates that the database connection is unavailable. A connection to the database may be unavailable if the database is down or if the database is listening on a port other than the one configured for it in the eG manager or owing to a poor network link. If the Availability measure reports the value 0, then, you can check the value of this measure to determine whether/not it is due to the unavailability of a connection to the server. |
| Statement_availability |
Indicates whether the database query is executed successfully or not. |
Percent |
If this measure reports the value 100, it indicates that the query executed successfully. The value 0 on the other hand indicates that the query failed. In the event that the Availability measure reports the value 0, check the value of this measure to figure out whether the failed query is the reason why that measure reported a server unavailability. |
| No_of_records |
Indicates the number of records fetched from the database. |
Number |
The value 0 indicates that no records are fetched from the database. |