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Changing database character set : how to revert to the initial state ?

edited Apr 19, 2011 8:54PM in Database Administration (MOSC) 7 commentsAnswered ✓
Hi, I've to change the character set of two databases with the following characteristics :
1) The new character set is a superset of the old one (no convertible or truncated datas)
2) One database in 10g and one in 9i (I will use csalter and alter database)

How to revert to the initial state for my two databases ?
10g : by using csalter from new to old ?
9i : by using alter database character set old ?

Regards,

Frederic.

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