The Web and Business tiers in the Application View provide a visual indication about problems with the performance and availability of application server, compared to the set Minor . This topic describes the information presented on the Web and Business tiers (also known as presentation and logic tiers) and how you can use this information to identify performance and availability problems in your application.
The assignment of an application server as a Web or Business tier depends how the App Visibility agent recognizes most of the transactions on the server:
For information about transaction types, see Analyzing business transactions.
This topic presents the following information about the application servers tiers:
To perform this procedure, you must have-level access, or higher.
In the Application View, the Web and Business tiers display the number of servers that have one or more transaction problems (latency violations or errors) during the selected period. The tiers display the following information:
The following example describes the information in the Web and Business tiers:
In the Tier Members section of the page, click a filter to show or hide application servers with the selected status.
Filters for servers with Critical and Minor events are selected by default to show the servers with detected issues.
Click a server name to select the server (or to clear the selection) and examine details about problems with the servers.
For selected servers, the following details are displayed:
On the Summary tab, you can compare relative values for selected servers. For example, you might want to examine the server with the largest number of hits per second, or with the greatest percentage of latency violations.
For selected servers, the following details are displayed on the Summary tab, below the Tier Members section. Click a column heading to sort entries by that category.
|Action menu||Select Show Business Transactions to examine transaction details|
|Severity icon||Representation of the severity level of events on the server|
|Application Server Name||Name of the application server|
Estimated number of requests sent to the servers per second
Variations in the reported metrics might occur between the values in the tier box and the total of tier members because of the way fractional results are calculated.
Percentage of transaction on the server with latency violations or errors that exceed defined thresholds
Percentage of transactions on the server with latency violations
Percentage of transactions on the server with errors
Click the Problems tab to examine the types of problems on the selected servers.
For selected servers, the following details are displayed on the Problems tab. Click a column heading to sort entries by that category.
Representation of the problem severity level
The severity level remains unchanged until all transaction and server problems of that level are closed.
Brief problem description, such as
|Application Server Name|
Name of the application server
Time and date that the problem started which caused the displayed severity
If the problem started earlier than the displayed time, click the start time to reset the time selection. The time slider moves to the five-minute period that includes the problem start time.
For application server metrics, the value of the threshold that was crossed
For transactions, which represent an aggregation of entry points, the threshold value is not applicable (N/A).
Open or Closed, which represents the current status of the problem, and time in which the problem was resolved, if applicable