Help: Can't create a partitioned table.

 I don't understand what it means and how to solve it.

Any help and suggestion of this problem?

Thanks in advance,
-sirirut-

PS. The following is my script.

    1> CREATE TABLE MES05A (

     2>   STID           VARCHAR2(8)  NOT NULL,
     3>   DATE_TIME      DATE         NOT NULL,
     4>   RELH           NUMBER(8,4),
     5>   TAIR           NUMBER(8,4),
     6>   WSPD           NUMBER(8,4),
     7>   WVEC           NUMBER(8,4),
     8>   WDIR           NUMBER(8,4),
     9>   WDSD           NUMBER(8,4),
    10>   WSSD           NUMBER(8,4),
    11>   WMAX           NUMBER(8,4),
    12>   RAIN           NUMBER(8,4),
    13>   PRES           NUMBER(8,4),
    14>   SRAD           NUMBER(8,4),
    15>   TA9M           NUMBER(8,4),
    16>   WS2M           NUMBER(8,4),
    17>   FLSV           NUMBER(8,4),
    18>   PRIMARY KEY(STID, DATE_TIME)
    19>            using index tablespace mesindex_1994,
    20>   FOREIGN KEY(STID) REFERENCES
              geotable(STID)
    21> )
    22> partition by range (date_time)
    23> (partition year1994 values less than ('dec-31-94')
    24>    tablespace mes05_1994)
    25>  pctfree 5