How to fix the Oracle error ORA-12056: invalid REFRESH method?

In this post, you’ll learn more about the Oracle ErrorORA-12056: invalid REFRESH method with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12056: invalid REFRESH method

Reason for the Error ORA-12056: invalid REFRESH method

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

How to fix the Error ORA-12056: invalid REFRESH method ?

You can fix this error in Oracle by following the below steps

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.