"invalid REFRESH method"
*Cause: The NEVER REFRESH option may not be used under the
* 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.