A CLOB stores character data encoded in the database character set. A NCLOB stores character data encoded in the national character set
SELECT parameter, value
FROM v$nls_parameters
WHERE parameter LIKE '%CHARACTERSET'
will show you the database and national character sets of your database.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…