BEGIN
  EXECUTE IMMEDIATE 'SET USE DATA GRANTS ONLY ON dds_ai_customers DISABLED';
EXCEPTION WHEN OTHERS THEN NULL;
END;
/

BEGIN EXECUTE IMMEDIATE 'DROP DATA GRANT ai_sales_rep_customers'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP DATA GRANT ai_regional_manager_customers'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP DATA GRANT ai_hr_global_customers'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP TABLE dds_ai_customers PURGE'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP DATA ROLE sales_rep_role'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP DATA ROLE regional_manager_role'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP DATA ROLE hr_global_role'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP ROLE ai_prompt_session_role'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP ROLE ai_prompt_legacy_access_role'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP END USER alice'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP END USER bruno'; EXCEPTION WHEN OTHERS THEN NULL; END;
/
BEGIN EXECUTE IMMEDIATE 'DROP END USER carla'; EXCEPTION WHEN OTHERS THEN NULL; END;
/