Beware of a Single Data Point Yielding Misleading Results

Oracle Dynamic Monitoring Service 6-3 A sensor full name consists of the sensor name, preceded by the name of its associated noun, and a delimiter. Examples: dmsDemoBasicBinomialcomputeSeries, dmsDemoBasicBinomialloops, dmsDemoBasicBinomiallastComputed. A DMS metric name consists of a sensor name plus the . character plus the metric. For example, computeSeries.time, loops.count, and lastComputed.value are valid DMS metric names.

6.1.1.2.2 General DMS Naming Conventions and Character Sets DMS names should be as

compact as possible. Whenever possible, when you define noun and sensor names, avoid special characters such as white space, slashes, periods, parenthesis, commas, and control characters. Table 6–2 shows DMS replacement for special characters in names.

6.1.1.2.3 Noun and Noun Type Naming Conventions The following conventions are used

when naming noun and noun types: ■ A noun name should identify a specific entity of interest. ■ Noun types should have names that clearly reflect the set of metrics being collected. For example, Servlet is the type for a noun under which the metrics that are specific to a given servlet fall. ■ Noun type names should start with a capital letter to distinguish them from other DMS names. All nouns of a given type should contain the same set of sensors. ■ The noun naming scheme uses a as the root of the hierarchy, with each noun acting as a container under the root, or under its parent noun. Note: The suffixes .time, .count, and .value are immutable. Sensor and noun names, however, can be modified as needed. Table 6–2 Replacement for Special Characters in DMS Names Character DMS Replacement Character Space character Underscore character: _ Period character: . Underscore character: _ Control character Underscore character: _ Less than character: Open parenthesis: Greater than character: Close parenthesis: Ampersand: Caret: Double quote: Backquote: ‘ Single quote: ’ Backquote: ‘ Note: Oracle Fusion Middleware includes several built-in metrics. The Oracle Fusion Middleware built-in metrics do not always follow the DMS naming conventions.