Aggregate Persistence

Question

Hi all
I try to create three aggregate table based on my dimensions. After run Aggregate Persistence Wizard, I run the command to create the table.
The command interrupt with the error:
"[nQSError: 84008] [Aggregate Persistence] Error while processing aggregates (refer previous in log).
Statement preparation failed"
NQServer.log :
"SA_Doc_Nam00001D1D: [nQSError: 84004] [Aggregate Persistence] Database create/populate failed.
*****ABORTING AggregateManager*****: [nQSError: 84008] [Aggregate Persistence] Error while processing aggregates (refer previous errors in log)"
When i login to Administration tool, I can see the table only in the physical layer, but it's empty or not accesible. In the Business Model nothing changed.
I try to grant any permission to my db user specified in the connection pool.
thank all

Answer 1

Cosimo,
If you've built your business model correctly with the complex joins and the dimensions relating to your fact, then the wizard will pick them up normally and will allow you to generate a script like this:
prepare aggregates
"ag_Fact_Budget"
for "Core"."Fact - Budget"("Budget Amount")
at levels ("Core"."Conformed Date"."Fiscal Year")
using connection pool "Siebel Data Warehouse"."Data Warehouse Connection Pool"
in "Siebel Data Warehouse"."Catalog";
Check that your BM is consistent and sound (stars in physical and BM layer built right).
Documentation-wise, refer to the Oracle Business Intelligence Server Administration Guide Version 10.1.3.2, page 189 f. or the Server Architect course, module 9 "Using Aggregates".