ORA-12056: invalid REFRESH method
Cause: The NEVER REFRESH option may not be used under the following conditions:* The materialized view is updatable* The materialized view refreshes ON COMMIT* Automatic refresh options are specified
Action: For updatable materialized views, reissue the SQL command using REFRESH FORCE, REFRESH FAST, or REFRESH COMPLETE. For read-only materialized views, reissue the SQL command using ON DEMAND.
Error Type: ORA