Oracle 数据库类型varchar2 oracle数据类型number(2,3)

VARCHAR2(size [BYTE | CHAR])

Variable-length character string having maximum length size bytes or characters. You must specify size for VARCHAR2. Minimum size is 1 byte or 1 character. Maximum size is:

32767 bytes or characters if MAX_STRING_SIZE = EXTENDED

4000 bytes or characters if MAX_STRING_SIZE = STANDARD

Oracle 12C以上才支持32767字节，需要修改参数MAX_STRING_SIZE = EXTENDED