https://oracle-base.com/articles/23/materialized-view-concur...
From the article: "Concurrent refreshes will only happen if there are no overlaps in the materialized view rows updated by each session."
https://oracle-base.com/articles/23/materialized-view-concur...
From the article: "Concurrent refreshes will only happen if there are no overlaps in the materialized view rows updated by each session."