Is Oracle Workflow required to execute OWB schedules?

Question

Hi,
I want to create and deploy a schedule in OWB 10gR2 to automatically run my OWB process flow every week. I would like to know
1) Whether I need to install Oracle workflow too in order to execute the process flow as per the schedule created?
2) If not, how does the OWB scheduler work?
3) Also, if the scheduled proces flow terminates due to some error, how do I resume executing it from the point of termination after correcting the error?
Thanks
Amit

Answer 1

Hi Amit,
1. Is the workflow monitor a standard part of Oracle workflow,or does one need a separate license for it?All parts Oracle workflow (workflow server, workflow monitor, workflow builder) licensed with Oracle database licenses,
so if you buy Oracle database you can use workflow components without any limitations.
2. In your approach, you had mentioned that there should be no transitions for error, but I would like to send an email notification to the DW administrator incase of an error before suspending the process flow.My recomendation is to use additional PL/SQL procedure which will executed periodically (for example every 30 minutes, scheduled with DBMS_JOBS/DBMS_SCHEDULER),
in this procedure you can use query on OWB public view (ALL_RT_AUDIT_EXECUTIONS) or workflow repository views/tables
for identification failed steps/mappings (if you decide to use OWB public view) or "stucked" processflow (if you will use workflow views/tables,
algorithm of identification stucked processflow you can see in workflow PL/SQL package WF_ENGINE, procedure ProcessStuckProcess).
Using post-mapping is more expensive because you need modify each mapping which you want to monitor for fails.
Example of query for identifiaction failed steps (PL/SQL prcoedures and mappings) within period of time datetime1..datetime2 with ALL_RT_AUDIT_EXECUTIONS
select * from ALL_RT_AUDIT_EXECUTIONS where task_type in ('PLSQL','PLSQLProcedure')
and NOT (return_result is null or return_result='OK') and :datetime1<=created_on and created_on<:datetime2
Regards,
Oleg