Manually Refresh Materialized View n Oracle

Manually Refreshing Materialized Views and Creating Refresh Groups in Oracle

execute DBMS_SNAPSHOT.REFRESH( 'MV_EMP','f');

Parameters of Procedure 

REFRESH
The first parameter to the procedure 
REFRESH is the name of the materialized view or snapshot, the second parameter 
specifies the type of refresh.




Type 
of Refresh 
Description

F, f 
Fast Refresh

C, c 
Complete Refresh

A 
Always perform complete refresh

? 
Use the default option




The manual refresh overtakes any previous refresh timing options, which were specified during the creation of the view. It 
more specifically overrides the 'start with' clause, which is specified with the 'create materialized view' command.

Also provided with DBMS_SNAPSHOT is the REFRESH_ALL procedure. This procedure refreshes all materialized views, 

which were defined using the automatic refreshes.

SQL>  execute DBMS_SNAPSHOT.REFRESH_ALL;
PL/SQL procedure successfully completed.