I have 2 SQL queries that I need to call in data model, but before calling them I need to execute stored procedure with parameters.
Is this possible in BI Publisher?
Yes it is possible using Event Triggers. This feature is available from version 11.1.1.6. You can refer documentation here https://docs.oracle.com/cd/E23943_01/bi.1111/e22258/add_event_trig.htm#BIPDM331
Update: As per documentation only functions are allowed. "The BI Publisher data model supports before data and after data triggers that execute a PL/SQL function stored in a PL/SQL package in your Oracle Database. The return data type for a PL/SQL function inside the package must be a Boolean type and the function must explicitly return TRUE or FALSE."