unicode support - cheeyoung/sqlplus-public GitHub Wiki

Oracle Unicode
21.1 12.1
18. 9.0
12.2 7.0
12.1 6.2
11.1 5.0
10.2 4.0

References

1.2.10 Unicode Support 21c
Unicode 12.1.0 2019 May 7
Unicode 14.0.0 2021 September 14