Database Install/Upgrade/Opatch (MOSC)

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Oracle Character set query during database upgrade

in Database Install/Upgrade/Opatch (MOSC) 2 commentsAnswered

Hi
We have a 12c Oracle database (RHEL) with the following character sets :-

NLS_NCHAR_Characterset UTF8
NLS_Characterset AL32UTF8

We want to migrate the data (using data pump) to a new 19C database RHEL 8.X.

My question is :-

(1)Should I keep the charactersets the same as source or create it with settings :-

NLS_NCHAR_Characterset AL16UTF16
NLS_Characterset AL32UTF8

(2)Will there be any issues during the export/import if NLS_NCHAR_Characterset was AL16UTF16 on target?

(3)is AL16UTF16 as superset of UTF8 i.e. there will no data loss if I used AL16UTF16 ?

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