Conversion of Database character set is more difficult when large databases involve. Database character set conversion is also a very important procedure while we need or application needs a change of character set.
Oracle provides very good utility for pre-checking of database character set migration. It calls CSSCAN. Using CSSCAN we can check possible problems and issues which will be facing in the conversion of database. CSSCAN provides full reports with errors too.
If we found any problem or error in the output report of CSSCAN then we correct it before start database character set conversion.
The following article explains the usage of Oracle utility CSSCAN for pre-checks of database character set conversion.
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Expert Remote DBA services team