BTW, I had a look to this other incident:
I set jobExecutorActivate inside to true but still doesn’t work:
<?xml version="1.0" encoding="UTF-8" ?>
<!-- Before camunda version 7.2 process key-length must be lower than 25 -->
<process-archive name="epsilon">
<process-engine>default</process-engine>
<properties>
<property name="isDeleteUponUndeploy">false</property>
<property name="isScanForProcessDefinitions">true</property>
<property name="jobExecutorActivate">true</property>
</properties>
</process-archive>
</process-application>
My code creates several parallel threads, and then inside every thread I call an EJB method wich calls saveTask three times and finally issues another EJB call which calls one completeTask.
I’m using Camunda 7.8 and JBoss EAP 6.4.