Change History (SAP DB) 

List of all database parameter changes sorted by change date.

To display changes for a specific date, click the symbol at the beginning of the line containing the relevant date, or select the date and choose Expand subtree. A list of parameter changes for that day appears as well as the previous and new parameter values. Parameters no longer used by the database after a specific date have the value <<parameter inactive>>.

The parameter history data is logged once a day by the collector. If you have changed database parameters, the correct change date is displayed only after the collector has logged the change.