DBMS_Snapshot.refresh not working on 11g , materialized view error

I executed DBMS_Snapshot.refresh on Oracle 10g it worked fine, but when i execute the same on Oracle 11g it gives the following error

DBMS_SNAPSHOT.refresh('Table1','F'); 

 BEGIN DBMS_SNAPSHOT.refresh('Table1','F'); END; 
 . 
 *

 ERROR at line 1: 
 ORA-23401: materialized view "localuser"."Table1" does not 
 exist 
 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2558 
 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2771 
 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2740 
 ORA-06512: at line 1

Any help much appreciated

Regards.

Nandish

OK, there may be many reasons for this.

1. You didn't recreate the MV yet in 11g. You can't refresh an MV to create it.

2. You didn't recreate a synonym (public or private) to the schema where the MV is located.

3. You didn't recreate grants to the MV in another schema, so create them.

You might try DBMS_MVIEW instead of DBMS_SNAPSHOT.

exec dbms_mview.refresh('Table1');