Replication and insufficient privileges

We are trying to set up replication between two instances. Read only works OK. However, updateable snapshots are failing. The trace on the slave site shows:

Errors in file C:\ORANT\RDBMS73\trace\hkSNP0.TRC:

ORA-12012: error on auto execute of job 41
ORA-01031: insufficient privileges
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 271
ORA-06512: at "SYS.DBMS_IREFRESH", line 413
ORA-06512: at "SYS.DBMS_REFRESH", line 171
ORA-06512: at line 1

The snapshot groups were created by REPADMIN which was created via:

CREATE USER repadmin IDENTIFIED BY repadmin; EXECUTE dbms_repcat_admin.grant_admin_any_repgroup(userid=>'repadmin'); GRANT EXECUTE ON dbms_defer TO repadmin WITH GRANT OPTION;

In addition, if I manually run the job, it fails. However, if I manually run the contents of the job (i.e. execute dbms_refresh(...), it works.

Thanks in advance.

• Aric