eG Monitoring
 

Measures reported by AppVServerDBTest

The App-V Management Server relies on the Microsoft SQL Server to host the App-V database, which contains configuration and settings for virtual applications. The App-V Management Server is the communication conduit between the App-V Web Management Console and the SQL Server data store. Whenever a virtual application request is received from the App-V client, the APP-V Management server queries the APP-V database and sends the configuration settings to the APP-V Publishing server which hosts the virtual application package for streaming. From an end user perspective, the whole process of loading the virtual application should be just like how a real application is loaded on the user’s environment. Therefore, the configuration and settings of the virtual application package should be transferredwithout any time delay from the APP-V database, once the request is received. A higher time dalay to process the requests will eventually lead to a delay in the loading of the virtual application which would terribly affect the end user experience. Therefore it is imperative to monitor the App-V database. The AppVServerDBTest test exactly does the same!

This test monitors the availability and response time from clients by the APP-V database from an external perspective.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Availability Indicates the availability of the database server. Percent A value of 100 indicates that the database serfver is currently available and a value 0 indicates that the database server is currently unavailable.

A database server may be unavailable either when the server has not been started or due to misconfiguration/malfunctioning of the database server.
Response_time Indicates the time taken by the database server to respond to a user query. Secs This measure is the sum total of the MssqlConResTime and MssqlQryResTime measures.

A low value is desired for this measure. A gradual/sudden increase in response time is indicative of a bottleneck at the database server.
MssqlConResTime Indicates the time taken by this server to connect to the database server. Secs A low value is desired for this measure. A high value could indicate a connection bottleneck. Whenever the Total response time measure soars, you may want to check the value of this measure to determine whether a connection latency is causing the poor responsiveness of the server.
MssqlQryAvailable Indicates whether the database query is executed successfully or not. Percent A value of 100 for this measure indicates that the query was 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 server unavailability.
MssqlQryResTime Indicates the time taken by the database server to execute a query. Secs A high value could indicate that one/more queries to the database are taking too long to execute. Inefficient/badly designed queries to the database often run for long periods. If the value of this measure is higher than that of the MssqlConAvailable measure, you can be rest assured that long running queries are the ones causing the responsiveness of the server to suffer.
MssqlNoOfRecords Indicates the number of records that were fetched from the database. Number If the value of this measure is 0, then it indicates that no records have been fetched from the database.
MssqlConAvailable Indicates whether the database connection is currently available or not. Percent A value of 100 for this measure 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.