Using Extract Command to purge datas from a table

Hi

i have a table FORUM_HISTORY and the columns where below mentioned from this table i need to purge datas by creating a procedure and keep the datas for the last 60 days 

 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 SCHEMA                                             VARCHAR2(35)
 OBJECT_NM                                          VARCHAR2(35)
 TABLESPACE_NM                                      VARCHAR2(30)
 SEGMENT_SIZE_KB                                    NUMBER
 NUM_ROWS                                           NUMBER
 LEAF_BLOCKS                                        NUMBER
 DAY                                                VARCHAR2(2)
 MONTH                                              VARCHAR2(2)
 YEAR                                               VARCHAR2(4)
 HIST_DT                                            DATE

i had created the sql command to create a procedure for this

eg:

delete from FOURM_HISTORY  where hist_dt between hist_dt and sysdate-60;

its working, but can any one suggest me how to call this command using extract command