topic Re: Restarting a process in Alfresco Archive

Restarting a process

rodiaz — Mon, 16 Jul 2012 11:15:18 GMT

Hi there,Is true that the current state of a process instance is only stored in database when the process execution reaches a wait state? I understand for wait state user and receive tasks. When the server failes, I´m not able to know querying the history where was the flow when this happened. This

Re: Restarting a process

frederikherema1 — Mon, 16 Jul 2012 11:23:48 GMT

When the server crashes, the transaction on the DB is left in an inconsistent state and is rolled back… So all variable-updates and process-changes are rolled back. If you make sure you services use the same transaction, they get rolled back as well. If you have non-transactional services in the process I'm afraid you're on your own. This is the case with all combinations of transactional and non-transactional stuff anyways, not just activiti.

You can always make your service-task run asynchronously. This means that, when the process reaches the step in your process, It persists it's state and returns control to the tread. The execution of the service-task will be done by the job executor asynchronously. If you make all following service-tasks async, then after every execution of one, the state will be stored to the DB. This makes the frame of possible inconsistency much smaller.

Re: Restarting a process

bernd_ruecker — Wed, 01 Aug 2012 16:33:57 GMT

Ho Rodiaz.

I tries to explian the overall Activiti TX management in a bit more details here: https://app.camunda.com/confluence/display/foxUserGuide/Thread+and+Transaction+Management. Maybe that helps.

Cheers
Bernd