How do I stop a materialized view from refreshing?
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How do I stop a materialized view from refreshing?
A materialized view created with the automatic refresh can not be alter to stop refreshing. In order to disable that you must break the dbms_job that was created in order to refresh the view. Mview are local copies of data located remotely, or are used to create summary tables based on aggregations of a table’s data.
Can I update materialized view in Oracle?
If the materialized view fails to revalidate, it cannot be refreshed or used for query rewrite. This clause lets you manage the staleness state of a materialized view after changes have been made to its master tables.
How do I refresh a materialized view on commit?
About ON COMMIT Refresh for Materialized Views. A materialized view can be refreshed automatically using the ON COMMIT method. Therefore, whenever a transaction commits which has updated the tables on which a materialized view is defined, those changes are automatically reflected in the materialized view.
Why is the materialized view not fast refreshable?
The materialized view is not fast refreshable because DML has occurred to a table on which PCT fast refresh is not possible. To avoid this occurring, Oracle recommends performing a fast refresh immediately after any partition maintenance operation on detail tables for which partition tracking fast refresh is available.
What are the restrictions of on commit clause of create materialize view?
The ON COMMIT clause of CREATE MATERIALIZE VIEW has some restrictions. Such as ,• ON COMMIT clause is not supported for materialized views containing object types.•
How do I update the data in a materialized view?
The data in the materialized view remains unchanged, even when applications make changes to the data in the underlying tables. To update the data in the materialized view, you can use the REFRESH MATERIALIZED VIEW statement at any time to manually refresh materialized views.
