The Mail IMAP Redundancy Group target is a grouping of IMAP agent monitored targets that have identical configuration, characteristics, and functionality. While a single IMAP server instance is vulnerable to the failure of its host or system, a redundant group of IMAP servers continues to function despite the loss of an IMAP server instance, hiding any such failure from clients, and allowing other IMAP server instances in the group to service the requests.
The Bytes Transferred category provides information about the data transferred between IMAP Server and IMAP Clients.
This metric measures the amount of data received by the IMAP Server from the IMAP Clients. The value is the sum of all the data received by the IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
This metric measures the amount of data sent to IMAP clients by the IMAP Server. This value is the sum of all the data sent by the IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
The Client Connections category provides information about the client connections on the IMAP Server.
This metric shows the total number of client connections open on the IMAP Server. The value is the sum of all open connections for IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
The Fetch Details category charts the rate of FETCH commands requested by all clients of IMAP Server instances on this target over the collection period. An IMAP client will use the FETCH command to get most types of message data from an Oracle Collaboration Suite Database, including message identifiers, header information, messages, and message body parts.
This informational metric represents the rate of FETCH commands occurring over a period of time. This rate should vary proportionally to the number and type of mail clients concurrently connected. Changes in this value can be caused by a "rogue" client or by users changing from one type of mail client to another. The FETCH commands rate indicates the usage patterns and resource requirements of the mail system. This rate is calculated by considering the sum of all the fetch count values of all IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
The Login Details category provides information about the time taken by the IMAP client to login to the IMAP server.
This metric shows the average time taken for a connected client to login to the IMAP Server. It is also indicative of the Oracle Internet Directory response time because clients are authenticated against the Oracle directory server.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
The NOOP Details category provides information about the operations performed using NOOP commands.
This metric shows the number of times the IMAP client connected and received feedback from the IMAP Server by using the NOOP command. The value is the sum of all NOOP counts of all IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |
The Response category captures the response characteristics of the IMAP agent monitored target as seen by a client application.
This metric indicates whether or not clients are able to access Mail through the IMAP Server. Its availability depends upon the status of all IMAP agent monitored targets. The status is "up" as long as at least one of the IMAP agent monitored targets is up.
If the Status of Mail IMAP Redundancy Group is down, then check the status of the individual IMAP agent monitored targets to identify which particular one is down.
The Security category provides information about security related activities.
This metric shows the connections refused by the IMAP Server. The value is the sum of all the connections refused by the IMAP agent monitored targets.
The following table shows how often the metric's value is collected.
| Target Version | Evaluation and Collection Frequency |
|---|---|
| Version 1.0 | Every 15 minutes |