I am not a DBA. i was giving this task to drop a large table which have 4Billion rows and has 22000 partitions. what would be the best way to drop the table and get back the space.

my DBA suggested to do the following two steps

1) Drop partition with REUSE STORAGE and
2) drop tablespace including contents and datafiles.

I dont understand how to drop the partitions with reuse storage clause. i tries to do this and i am getting the following error

alter table COVERAGE_DETAIL_FACT drop partition COVG_FACT_20480 reuse storage

error report:
14048 "a partition maintenance operation may not be combined with other operations"

can any one help me out with this.

Thank you in advance.