The data purger (purger) service maintains the size of the database by purging old data from the database.
There are logging levels that determine the detail of messages that the data loaders record in the log files. In decreasing level of detail, these levels are ALL (all messages), TRACE, DEBUG, INFO, WARN, ERROR, FATAL, and OFF (no messages).
By default, the data purger logs messages of ERROR level or higher (that is, all ERROR and FATAL messages) to the data purger log file, which is located in the Platform Analytics server log directory (ANALYTICS_TOP/log in the Platform Analytics server host).
Each scheduled tasks is responsible for purging different tables according to different schedules. This allows the workload to be split among different times.
Each scheduled task calculates the data retention date according to the data purger configuration, examines the tables (and their corresponding partitions) for which it is configured and drops any partitions that are older than the calculated data retention date.
The data purger is installed as scheduled tasks. Change the schedules of the data purger services as you would for scheduled tasks (see Scheduled tasks).