I am new to Odoo OpenERP, I am working on V8, currently I am trying to understand the workflow.
I am thinking if there is a way to know what is the current activity of a specific workflow instance.
I found the solution, I would like to share it with you.
you can check the database table, wkf_workitem, in this table you will find the act_id (activity id) field of the latest executed activity on the workflow instance (inst_id).
Hope this may help. Feel free to contact me for any detail.