different charset support? about go-ora HOT 6 CLOSED

panic: charset KO16MSWIN949 is not supported by the driver

goroutine 1 [running]:
main.main()
        ---/ledger/example/go-ora/main.go:36 +0x23f
exit status 2

import (
	"context"
	"database/sql"
	"encoding/base64"

	"github.com/davecgh/go-spew/spew"
	go_ora "github.com/sijms/go-ora/v2"
	"github.com/sijms/go-ora/v2/converters"
	"golang.org/x/text/encoding/korean"
)

// Server configuration
// NLS_NCHAR_CHARACTERSET ,AL16UTF16
// NLS_CHARACTERSET       ,KO16MSWIN949

type KO16MSWIN949Converter struct {}
func (KO16MSWIN949Converter) Encode(in string) []byte {
	v, err := korean.EUCKR.NewEncoder().String(in)
	if err != nil {
		panic(err)
	}
	return []byte(v)
}

func (KO16MSWIN949Converter) Clone() converters.IStringConverter {
	return KO16MSWIN949Converter{}
}

func (KO16MSWIN949Converter) GetLangID() int {
	return 846
}

func (KO16MSWIN949Converter) Decode(in []byte) string {
	v, err := korean.EUCKR.NewDecoder().Bytes(in)
	if err != nil {
		panic(err)
	}
	return string(v)
}

go_ora.SetStringConverter(db, KO16MSWIN949Converter{}, nil)