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Comment: IDM 5.0.1: Changed Activiti to Flowable throughout the article.
Info

This article is valid for Smart ID 20.11 and laterincludes updates for Identity Manager 5.0.1.

This article describes the scheduled job that regularly cleans up the the process history of ActivitiFlowable. Finished processes are automatically removed from the database to improve performance and save disk space. This is used in Smart ID Identity Manager.

Configure

...

Flowable process cleanup

In system.properties, you set up:

  • a Cron expression stating when the job shall run, for example, every Friday at 11 pm

  • a "buffer time", stating after how many days a finished or inactive process shall be deleted

This is an example:

Example: system.properties settings
Code Block
# Age of history entries in days, after which finished task should be deleted
activitiHistoryCleaner.daysAfterEndTime=30
 
# Age of history entries in days, after which inactive task
# (i.e. unfinished task, which are untouched for daysAfterEndTime days) should be deleted
activitiHistoryCleaner.daysOfInactivity=180
 
# Cron expression, when the cleanup task should run. Here every friday at 11 pm
activitiHistoryCleanerJobTrigger.cronExpression = 0 0 23 ? * FRI *

If these parameters are not set, then there are default values set in the process_execution-beans.xml.

Logging

A log file named nexus_activiti_history_cleanup.log is generated. It logs the history data that was deleted.

Used

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Flowable services

These Activiti Flowable services are used to perform the cleanup task:

  • HistoryService: Queries for finished process instances and deletes them

  • TaskService. Queries for inactive process instances

  • ManagementService: Queries for stuck process instances (asynchronous tasks, that have no retries left)

  • RuntimeService: Deletes process instances, which are returned by TaskService and ManagementService

Affected database tables

These are the affected database tables:

Database table

Description

  • ACT_HI_PROCINST

  • ACT_HI_ACTINST

  • ACT_HI_ATTACHMENT

  • ACT_HI_COMMENT

  • ACT_HI_DETAIL

  • ACT_HI_IDENTITYLINK

  • ACT_HI_TASKINST

  • ACT_HI_VARINST

For all processes that have been finished for X-days ((END_ACT_ID_ is not null) AND (END_TIME_ >= current date - X-days after finishing)

ACT_GE_BYTEARRAY:

General files, that are related to the specific process

ACT_RU_JOB

For all processes that will not run anymore and all related data. -> (RETRIES_ <= 0)

ACT_RU_TASK

For all unfinished processes where no user interaction has occurred in X-days (daysOfInactivity property)