Alter Database Character Set - Valid Superset Definitions
(Doc ID 119164.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 8.1.5 to 12.1]
Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 12.2]
Information in this document applies to any platform.
This note defines character set combinations which are valid for the
'ALTER DATABASE CHARACTER SET xxxx;' command which can be used in Oracle 8i and 9i.
In 10g and 11g the "superset" factor is simply not relevant.
We strongly suggest to ALWAYS use Csscan before doing a characterset change, even if the target is a (strict) superset and you are using 8i / 9i.
<Note 745809.1> Installing and configuring CSSCAN in 10g and 11g
<Note 458122.1> Installing and configuring CSSCAN in 8i and 9i
<Note 444701.1> Csscan output explained
Full, step by step, guides are available for most common conversions in <NOTE 225912.1> Changing the Database Character Set ( NLS_CHARACTERSET )
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