This documentation space contains information about PATROL Agents when deployed in a BMC Helix Operations Management environment. If you are a TrueSight Operations Management user, see PATROL Agent 21.02.

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Global channel

A single dedicated connection through which the PATROL Agent monitors and manages a specific program or operating system. The PATROL Agent maintains this connection to minimize the consumption of program resources or OS resources.


A periodic message sent between communicating objects to inform each object that the other is still active and accessible.

History repository

A binary file in which parameter values (except those that are displayed as text) are stored by the PATROL Agent. When the number of storage days is reached, the parameter values are removed in a cyclical fashion.

History retention period

The number of days that parameter values are stored in the history database before they are automatically purged. The history retention period can be specified at the class (global) level or the instance (local) level. History retention can be set for all parameters of a computer class, a computer instance, an application class, or an application instance. 


A dialog box that contains a static list of fields and displays current information about an object. This information could include the version number of a relational database management system (RDBMS) and whether the object is online or offline. Commands are run when the InfoBox is opened. Information can be manually updated if the InfoBox remains open for a period of time. PATROL Agent provides a number of commands for obtaining and displaying object information in an InfoBox.

Information event

Any event that is not a state change or an error. Typical information events occur when a parameter is activated or deactivated, a parameter is suspended or resumed, or application discovery is run. The default setting for the PATROL Agent is to prevent this type of event from being stored in the event repository. To store and display this type of event, you must modify the persistent filter setting in the PATROL Agent configuration file.

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