首先,确认字符集是否修改的不彻底.SELECT DISTINCT (NLS_CHARSET_NAME(CHARSETID)) CHARACTERSET,DECODE(TYPE#, 1, DECODE(CHARSETFORM, 1, 'VARCHAR2', 2, 'NVARCHAR2', 'UNKOWN'),9,DECODE(CHARSETFORM, 1, 'VARCHAR', 2, 'NCHAR VARYING', 'UNKOWN'),96,DECODE(CHARSETFORM, 1, 'CHA…