Setting the number of days that history is retained in the history database

The /AgentSetup/historyRetentionPeriod configuration variable determines the number of days that collected parameter values are retained in the history database. After this retention period has expired, PATROL deletes the retained information.

 From Console

For information about how to set the history retention period at the computer instance, application class, application instance, or parameter level, see PATROL Console for Microsoft Windows User Guide — Monitoring and Managing with PATROL, Volume 2 or PATROL Console for UNIX User Guide.