My Oracle Support Banner

Column size double or triple when using (Materialized) Views / CTAS in an AL32UTF8 db and the dblink points to a non-AL32UTF8 db (or inverse). (Doc ID 1592514.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 9.0.1.0 and later
Oracle Database - Standard Edition - Version 9.0.1.0 and later
Information in this document applies to any platform.

Purpose

Document why when using (Materialized) Views or doing CTAS (Create Table As Select ) of a table trough a database link in an AL32UTF8 db and the dblink points to a non-AL32UTF8 db you might see that (some) columns change in size.



Scope

 DBA's or application architects

Details

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
Purpose
Scope
Details
 From a 16bit (xx16xxxx like ZHT16MSWIN950), 8 bit (xx8xxxx like WE8ISO8859P1 or AR8MSWIN1256) or 7 bit (US7ASCII) source to AL32UTF8 (CTAS target/(Materialized) View side) database:
 From an AL32UTF8 source to a 16 bit (xx16xxxx like ZHT16MSWIN950) , 8 bit (xx8xxxx like WE8ISO8859P1 or AR8MSWIN1256) or 7 bit (US7ASCII) (CTAS target/(Materialized) View side) database:
 From AL32UTF8 to UTF8 or inverse:
References

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