The data model for WebSphere® Message Broker Monitoring agent is a star schema with dimensions or identifiers that are separated from facts or metrics. Metrics are measurable (numeric) attributes, which can be aggregated by identifiers. The relationship among the metric tables is defined using two common identifiers, resources and time.
The WebSphere Message Broker Monitoring agent collects various metrics. All the metrics are modeled for the agent. The metrics are classified into two categories, key metrics and extended metrics.
The key metrics are the most important or the most frequently used metrics. The key metrics are divided into three groups, resource usage, performance, and availability. You can either see the raw metrics or summarized (daily and hourly) metrics.
In addition to the key metrics, the extended metrics include all the other metrics of the WebSphere Message Broker Monitoring agent.
Identifiers are used to link metrics data across different agents. The two primary identifiers that are used by the WebSphere Message Broker Monitoring agent are resource and time.
Resource identifiers include execution group and host name. Time identifiers include various attributes of time, by which the metrics can be grouped, such as standard timestamp, date, minute, hour, day, week of year, month, quarter, or year.
Attributes describe the identifiers. For example, the detailed information about a channel can be described by the attributes, such as channel type, query type, or command level.