Dropping tablespace for a partitionned table

Question

Hi all,
I have a table partitionned and I want to drop the tablespace for a specific partition. So what happen in the table if I drop one tablespace with a commande drop tablespace tbs including contents and datafiles;
Does the index unusable in this table?
Regards

Answer 1

No, you can not drop a tablespace which contains tables whose partitions are not completely contained in this tablespace.
db9i :SQL> create tablespace users2 datafile '/u02/oradata/db9i/users201.dbf' size 10M;
Tablespace created.
db9i :SQL> CREATE TABLE sales_by_region (item# INTEGER, qty INTEGER,
  2  store_name VARCHAR(30), state_code VARCHAR(2),
  3  sale_date DATE)
  4  STORAGE(INITIAL 10K NEXT 20K) TABLESPACE test
  5  PARTITION BY LIST (state_code)
  6  (
  7  PARTITION region_east
  8  VALUES ('MA','NY','CT','NH','ME','MD','VA','PA','NJ')
  9  STORAGE (INITIAL 20K NEXT 40K PCTINCREASE 50)
TABLESPACE users,
10   11  PARTITION region_west
12  VALUES ('CA','AZ','NM','OR','WA','UT','NV','CO')
13  PCTFREE 25
14  TABLESPACE users2,
15  PARTITION region_unknown
16  VALUES (DEFAULT)
17  TABLESPACE test
18  );
Table created.
db9i :SQL> insert into sales_by_region values (1, 100, 'store 1','NY',sysdate);
1 row created.
db9i :SQL> insert into sales_by_region values (2, 200, 'store 2','UT',sysdate);
1 row created.
db9i :SQL> insert into sales_by_region values (3, 300, 'store 3','ZZ',sysdate);
1 row created.
db9i :SQL> commit;
Commit complete.
db9i :SQL> select count(*) from  sales_by_region
  2  /
  COUNT(*)
         3
--insure all data went to the right partition
db9i :SQL> alter table sales_by_region truncate PARTITION region_east;
Table truncated.
db9i :SQL>  select count(*) from  sales_by_region
  2  /
  COUNT(*)
         2
db9i :SQL> alter table sales_by_region truncate PARTITION region_west;
Table truncated.
db9i :SQL> select count(*) from  sales_by_region
  2  /
  COUNT(*)
         1
db9i :SQL> alter table sales_by_region truncate PARTITION region_unknown;
Table truncated.
db9i :SQL>  select count(*) from  sales_by_region
  2  /
  COUNT(*)
         0
db9i :SQL> insert into sales_by_region values (1, 100, 'store 1','NY',sysdate);
insert into sales_by_region values (2, 200, 'store 2','UT',sysdate);
insert into sales_by_region values (3, 300, 'store 3','ZZ',sysdate);
1 row created.
db9i :SQL>
1 row created.
db9i :SQL>
1 row created.
db9i :SQL>
db9i :SQL>
db9i :SQL> commit;
Commit complete.
db9i :SQL>  select count(*) from  sales_by_region
  2  /
  COUNT(*)
         3
--now drop one tablespace
db9i :SQL> drop tablespace users2 including contents and datafiles
  2  /
drop tablespace users2 including contents and datafiles
ERROR at line 1:
ORA-14404: partitioned table contains partitions in a different tablespace
db9i :SQL> !oerr ora 14404
14404, 00000, "partitioned table contains partitions in a different tablespace"
// *Cause: An attempt was made to drop a tablespace which contains tables
//         whose partitions are not completely contained in this tablespace
// *Action: find tables with partitions which span the tablespace being
//          dropped and some other tablespace(s). Drop these tables or move
//          partitions to a different tablespace
--move table partition from users2 to users
db9i :SQL> alter table sales_by_region move partition region_west
tablespace users;  2
Table altered.
--drop tablespace again
db9i :SQL>  drop tablespace users2 including contents and datafiles
  2  /
Tablespace dropped.