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Server Administrator's Guide
Using the Archiver : Data handlers : Data purging handler

Data purging handler

The Data Purging Handler deletes the data pertaining to all the qualified process instances or events extracted by the Data Extractor handler. Data belonging to all Process Instances/Events is not deleted in one single transaction. The data is divided in to batches of fixed size, and each batch deletion happens as a separate transaction.
All data of a qualified process instance that is in a completed or removed state is deleted from BPM Process Store. The purger deletes all data pertaining to a process instance including worksteps, workitems and the instance datafields. It also deletes the process alerts that are in deleted state.
* ProcessDataPurger