Mview Comments Missing After Out Of Place Refresh - 12c

(Doc ID 2399854.1)

Last updated on MAY 24, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


Out-of-Place Mview Refresh Option was introduced in Oracle Database 12c Release 1 to improve materialized view refresh performance and availability. This refresh option uses outside tables during refresh, Where as the existing "in-place" refresh directly applies changes to the materialized view container table. In out-of-place refresh method, the entire or affected portions of a materialized view are computed into one or more outside tables.

While doing Out-of-Place Refresh, Comments on the original materialized view container table are not copied to the outside table. 


Mview creation with comment



Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms