ORA-30459: string.string cannot be refreshed because the refresh method is NONE

ORA-30459: string.string cannot be refreshed because the refresh method is NONE

Cause: An attempt was made to refresh a summary whose refresh method is NONE

Action: Summaries whose refresh method is NONE (NEVER REFRESH) cannot be refreshed. Alter the summary to change the default refresh method from NONE to some other value.