I have a database in character set UTF8 . version 11g2.
And have a table 1 col nvarchar2(20).
Then I use sql loader to load some chinese words.

After loading. I select in sqlplus through putty, here is the results.

I am wondering the character with 4 bytes unable to store or display correctly in oracle database ?
And Oracle character set UTF8 will store character from 1 to 3 bytes only ? and so that 4 bytes can't identify ?