How to Split a Partition on a Range-Partitioned Table?

  How would I split the partitions for the table listed below to add values ‘2008’ & ‘2009’?

 

Do I add the partition this way:

 

ALTER TABLE SALES_BUSINESS_AREA

    ADD PARTITION SALES_08 LESS THAN ('2009')

    TABLESPACE OLAPTS_2008;

 

ALTER TABLE SALES_BUSINESS_AREA

    ADD PARTITION SALES_09 LESS THAN (MAXVALUE)

    TABLESPACE OLAPTS_2009;

 

Or do I split the partition (I don’t know what to do here):

ALTER TABLE SALES_BUSINESS_AREA SPLIT PARTITION SALES_07

AT (2008)

INTO ( PARTITION SALES_07 TABLESPACE OLAPTS_2007,

       PARTITION SALES_08 TABLESPACE OLAPTS_2008,

???????

 

 Table:

CREATE TABLE SALES_BUSINESS_AREA ( ... ) TABLESPACE OLAPTS PCTUSED    0 PCTFREE    20 INITRANS   1 MAXTRANS   255 STORAGE    (             BUFFER_POOL      KEEP            ) NOLOGGING PARTITION BY RANGE (YEAR)