By default, the data purger deletes old data. If you enabled data archiving of any table, the data purger archives old data to a file in the EGO_TOP/perf/work/archive directory. This file is a ZIP file containing a CSV file. The archive file names use the following format:
For example, CONSUMER_DEMAND_2007-01-15 22-15-00.zip is the name of an archive of the records from the CONSUMER_DEMAND table at 10:15:00 p.m. on 15 January, 2007.