What is workflow minimum? (stupid questions from rookie)

Guys,
we are evaluating Oracle workflow. If you could help us to answer some of the stupid questions we have - it would help us a lot.
1. There are two parts of Workflow installation - DB and midtier. Is it possible to use workflow without installing midtier? Our understanding - midtier is used for providing web access for the users to the workflow engine: they can approve/reject, check workflow status etc. But is it possible to perform all these tasks via email only or by building some simple user interface in our existing webtier (which is not based on Oracle webserver, though is using Oracle for the DB layer)
2. We were not able to configure other schema to have access to workflow successfully - though it looks like this schema has all possible privs set. If we are trying to call wf_engine.LaunchProcess - we are getting privs error. If we call it from the workflow schema - everything is working fine. Does anybody have any successful experience in doing this?
Thanks a lot everybody for help!

Hi,
I do not consider myself an expert at Workflow, but I will attempt to answer your questions (which are not stupid questions by any means)...
I will answer question 1 in two parts as it is essentially two questions.
1. "Is it possible to use workflow without installing midtier"
Workflow is a module inside the Database that is an optional installation.
No middle-tier needs to be installed as such.
The middle-tier I believe you are referring to is the Workflow Monitor, this is viewed by configuring either the:
- Database HTTP server DAD to display the Workflow Monitor
or
- Application Server HTTP Server DAD to display the Workflow Monitor
Configuring the Workflow Monitor for the Administrators is a very good idea.
Normal users do not normally need to view this page, but read-only acess can be setup (ie. the users connect as a user without the ADMIN role)
1. "But is it possible to perform all these tasks via email"
Using Workflow Notifications, emails can be sent to users where they can approve/reject.
2. We were not able to configure other schema to have access to workflow successfully
I am not sure why you are not successful here... have you granted execute on wf_engine.LaunchProcess to the other schema?
Cheers,
Degan.

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