My Oracle Support Banner

Mview Comments Missing After Out Of Place Refresh - 12c (Doc ID 2399854.1)

Last updated on SEPTEMBER 06, 2021

Applies to:

Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

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. 

Changes

Mview creation with comment

 

Cause

To view full details, sign in with your My Oracle Support account.

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


In this Document
Symptoms
Changes
Cause
Solution
References

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.