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PL/SQL Packages DBMS_REFRESH
Create groups of materialized views that can be refreshed together to a transactionally consistent point in time.
Subprocedures:
ADD      Add materialized views to a refresh group.  
CHANGE   Change the refresh interval for a refresh group.  
DESTROY  Remove all the materialized views from a refresh group and
         delete the refresh group.  
MAKE     Specify the members of a refresh group and the time interval
         used to determine when the members of this group should be refreshed.  
REFRESH  Manually refresh a refresh group.  
SUBTRACT Remove materialized views from a refresh group.   
 For full documentation of the packaged procedures 
  above see the Oracle Manual:
  "Oracle9i Supplied PL/SQL Packages and Types Reference"
  
  or the book Oracle Built in Packages 
  by Steven Feuerstein et al
  
Related Commands:
Related Views:
DBA_REFRESH ALL_REFRESH USER_REFRESH DBA_REFRESH_CHILDREN ALL_REFRESH_CHILDREN USER_REFRESH_CHILDREN