Materialized View Fast Refresh Is Slow Due to a Poor Execution Plan During the Insert Phase With Hints Such As CARDINALITY, NO_SEMI_JOIN, and HASH_SJ
(Doc ID 420040.1)
Last updated on FEBRUARY 03, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Information in this document applies to any platform.
Fast refresh for a materialized view is very slow. Tracing the recursive SQL with SQL Trace or
the 10046 event shows that the insert phase of the refresh is using one of the following hints in a subquery:
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