I would like to know which is the standard procedure to cleanup a jbpm database instance after a period of working.

We are still in the testing phase and, for example,
jbpm_byteblock has grown to 12522579 rows for a total size of 14 GB

Main questions are:

- The list of table which stores process instance data
- How to determine that a process is finished to clean all related data

My idea is to setup a scheduled task which cleanup the database

Thanks in advance