Fast refresh of materialized view on remote database

Question

Hi All,
I have the following scenario, two databases called ORCL_1 and ORCL_2
ORCL_1 (11.1.0.7) ORCL_2 (10.2.0.1)
EMPLOYEE (Master table)
DEPARTMENT (Master table)
I have created materialied view logs on both the master tables as follows...
create materialized view log on department
with rowid, sequence(department_id, department_name)
including new values
create materialized view log on employee
with rowid, sequence (employee_no, surname, firstname, title, department_id, dob, dependants)
including new values
On ORCL_1 i have created a materialized view as follows...
create materialized view employee_mview
build immediate
refresh on demand with rowid
as select e.employee_no, e.title, e.firstname, e.surname, d.department_name, d.department_id, e.dob, e.dependants, e.rowid emp_rowid, d.rowid dept_rowid
from employee@ORCL_2 e,
department@ORCL_2 d
where e.department_id = d.department_id
then i have a scheduled task, on ORCL_1, that execute "...dbms_mview.refresh ('mac_dba.employee_mview','?');...." every minute
this works fine, except for the fact that all the records are deleted from the materialized view and then all the records are re-inserted.
How can i get it so that only the records that have been added or amended, as per the materialized view logs, are refreshed to the materialized view.
thanks
Mel

Answer 1

Hi Harry,
Have tried creating materialized view as follows...
create materialized view mac_dba.employee_mview
build immediate
refresh fast on demand with rowid
as select e.employee_no, e.title, e.firstname, e.surname, d.department_name, d.department_id, e.dob, e.dependants, e.rowid emp_rowid, d.rowid dept_rowid
from mac_dba.employee@ORCL_2 e,
mac_dba.department@ORCL_2 d
where e.department_id = d.department_id
I get the following error message
ORA-12028: materialized view type is not supported by master site
thanks
Mel