Oracle Error Message
QSM-01299: query rewrite not possible because materialized view string is partially stale
Reason for the Error
The materialized view is partially stale. It is stale with respect to one or more partitions in one or more of its detail tables. The request query references one or more such detail partitions.
Solution
(1) Change the selection criteria of the request to restrict the query to only the fresh portion of the materialized view, or (2) ALTER {SYSTEM|SESSION} QUERY_REWRITE_INTEGRITY = STALE_TOLERATED or (3) refresh the materialized view.