What went wrong with this rename column statement?

SQL> ALTER TABLE testrename RENAME PROCESSED to PROCESSED_new;
ALTER TABLE testrename RENAME PROCESSED to PROCESSED_new
*
ERROR at line 1:
ORA-14155: missing PARTITION or SUBPARTITION keyword

SQL> desc testrename
Name Null? Type
----------------------------------------- -------- ----------------------------
SKN NUMBER
ASIN VARCHAR2(10)
UPC VARCHAR2(20)
PRODUCT_NAME VARCHAR2(255)
COPY VARCHAR2(2000)
AGE_FROM VARCHAR2(25)
AGE_TO VARCHAR2(25)
BATTERY_INCLUDED VARCHAR2(3)
BATTERY_TYPE VARCHAR2(20)
BATTERY_AMOUNT VARCHAR2(20)
PROCESSED VARCHAR2(1)

I am sure the syntex is correct but I kept on getting the same messgage from three databases on 3 versions: 8.1.6, 8.1.7 and 9.2.0.

I have renamed columns before and don't remember what I did differently. Could anyone figure out what is the problem here?

Thanks.