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Workflow Runtime Parameters

The workflow engine supports the following runtime parameters for advanced tuning:

Parameter name	Description	Default value	Allowed values range
EWFHistoryDepth	Controls the depth of the history kept for the individual workflow type (configuration). If a new instance of the workflow type is about to be run, the number of currently saved historical run-informations is checked and if there is no place for the new run-information (that is, the limit is reached), the oldest run-information is removed. This action removes both run-information and instance resources.	15	10 - 10000
EWFThreadSlots	Limits the number of tasks running in parallel per workflow.	3	3 - 30

Parameter name

Description

Default value

Allowed values range

EWFHistoryDepth

Controls the depth of the history kept for the individual workflow type (configuration). If a new instance of the workflow type is about to be run, the number of currently saved historical run-informations is checked and if there is no place for the new run-information (that is, the limit is reached), the oldest run-information is removed.

This action removes both run-information and instance resources.

10 - 10000

EWFThreadSlots

Limits the number of tasks running in parallel per workflow.

3 - 30

The parameters described are Java arguments, so they must be passed in the Java attribute form when starting the workflow engine (or the server when used as a server-embedded module):

-D<attributeName>=<attributeValue>

Example

-DEWFThreadSlots=6

To pass these runtime parameters permanently on the server startup, modify the onlinectl.bat or onlinectl.sh file by adding the following lines:

onlineCtl.bat

set JAVA_OPTS="-D<attributeName>=<attributeValue>"

onlineCtl.sh

export JAVA_OPTS="-D<attributeName>=<attributeValue>"

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