Wb_rt_api_exec in pl/sql as OWB target

Question

I've got a question similar to the one posted by Donna Kelley on 26-mar-2007 (
Re: 10gR2: How do you run OWB from Enterprise Manager (OEM) and Scheduler?
I'm unable to figure out the grants needed to execute wb_rt_api_exec.run_task within a pl/sql procedure when the procedure is being run by the OWB target user.
We just upgraded OWB in devo from 10.1.0.4 to 10.2.0.1.31. In the earlier version, there was no problem with the target user executing wb_rt_api_exec (although we used open, execute, close instead of run_task). The runtime repository owner granted execute on wb_rt_api_exec to the target schema. And then the 2 roles wb_r_owbruntime and wb_u_owbruntime were also granted to target. That's all it required.
In the new version, I can execute wb_rt_api_exec only as the design repository owner. I've granted the target user execute on wb_rt_api_exec. Also granted the 2 roles owb_d_owbowner and owb_o_owbowner roles to the target user (see sqlplus_exec_template.sql). But within a pl/sql procedure with the procedure run as the target user, the return code is 3 (failure). I can also not run sqlplus_exec_template as the target user. But I can run it successfully as the design repository owner.
This seems strange. We're running ETL mappings to populate target tables. It should be easy to run the pl/sql procedure as the target user. I don't want to run it as the repository owner because that would involve a bunch of grants on target tables. Seems silly.
I'd welcome any thoughts and advice.
Many thanks.
Gary

Answer 1

First, David, thanks very much for your help. Based on your example, what I'm trying to do should work.
Below is a very simplified example that demonstrates the problem. Note that executing the procedure as the target user produces an error (ie, the return value is 3) while executing it as the design repository owner succeeds.
Comments and advice are welcomed from all. I very well could be missing something obvious. Thanks to all.
devo> @who
OWBTARGET
devo> start t1
devo> create procedure t1 authid current_user as
2      sql_stmt varchar2(50) := 'set role owb_d_owbdesign, owb_o_owbdesign';
3 begin
4      execute immediate sql_stmt;
5      dbms_output.put_line(to_char(owbdesign.wb_rt_api_exec.run_task(
6      'RPTDEVO_LOC', 'PLSQLMAP', 'TERM_TO_DMS_CURR', ',', ',', 0, 0)));
7 end;
8 /
Procedure created.
devo> grant execute on t1 to owbdesign;
Grant succeeded.
devo> exec t1
Stage 1: Decoding Parameters
| location_name=RPTDEVO_LOC
| task_type=PLSQLMAP
| task_name=TERM_TO_DMS_CURR
Stage 2: Opening Task
| l_audit_execution_id=5390
Stage 3: Overriding Parameters
Stage 4: Executing Task
| l_audit_result=3 (FAILURE)
Stage 5: Closing Task
Stage 6: Processing Result
| exit=3
3
PL/SQL procedure successfully completed.
devo> @check_role_privs owbtarget
devo> select grantee "grantee",
2      granted_role "role",
3      admin_option "option"
4 from dba_role_privs
5 where grantee = upper('&1')
6 order by 2
7 ;
admin
grantee role option
OWBTARGET AQ_USER_ROLE NO
CONNECT NO
OLAP_USER NO
OWBR_OWBDESIGN NO
OWB_D_OWBDESIGN NO
OWB_OWBDESIGN NO
OWB_O_OWBDESIGN NO
RESOURCE NO
SELECT_CATALOG_ROLE NO
9 rows selected.
devo> connect owbdesign
Connected.
devo> @who
OWBDESIGN
devo> exec owbtarget.t1
Stage 1: Decoding Parameters
| location_name=RPTDEVO_LOC
| task_type=PLSQLMAP
| task_name=TERM_TO_DMS_CURR
Stage 2: Opening Task
| l_audit_execution_id=5400
Stage 3: Overriding Parameters
Stage 4: Executing Task
| l_audit_result=1 (SUCCESS)
Stage 5: Closing Task
Stage 6: Processing Result
| exit=1
1
PL/SQL procedure successfully completed.