Oracle查看表空间和删除表空间

SQL> desc dba_data_files
Name                                      Null?    Type
----------------------------------------- -------- ----------------------------
FILE_NAME                                          VARCHAR2(257)
FILE_ID                                            NUMBER
TABLESPACE_NAME                                    VARCHAR2(30)
BYTES                                              NUMBER
BLOCKS                                             NUMBER
STATUS                                             VARCHAR2(9)
RELATIVE_FNO                                       NUMBER
AUTOEXTENSIBLE                                     VARCHAR2(3)
MAXBYTES                                           NUMBER
MAXBLOCKS                                          NUMBER
INCREMENT_BY                                       NUMBER
USER_BYTES                                         NUMBER
USER_BLOCKS                                        NUMBER
ONLINE_STATUS                                      VARCHAR2(7)

SQL> select file_name,tablespace_name from dba_data_files;

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/users.259.738776263
USERS

+DATA/orcl/datafile/sysaux.257.738776261
SYSAUX

+DATA/orcl/datafile/undotbs1.258.738776263
UNDOTBS1

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/system.256.738776261
SYSTEM

+DATA/orcl/datafile/undotbs2.265.738776351
UNDOTBS2

+DATA/orcl/datafile/sp1data.dbf
SP1DATA

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/hapi.dbf
HAPI

+DATA/orcl/datafile/hapbi.dbf
HAPBI

+DATA/orcl/datafile/szsq.dbf
SZSQ

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/bireport.dbf
BIREPORT

+DATA/orcl/datafile/g3bi.dbf
G3BI

+DATA/orcl/datafile/ehrtbs.dbf
EHRTBS

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/ehrdoctbs.dbf
EHRDOCTBS

+DATA/orcl/datafile/ehrindtbs.dbf
EHRINDTBS

+DATA/orcl/datafile/g2_data.ora
G2_DATA

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
+DATA/orcl/datafile/g2_index_data.ora
G2_INDEX_DATA

/opt/tablespace/nnc_data01.dbf
NNC_DATA01

/opt/tablespace/nnc_data02.dbf
NNC_DATA02

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
/opt/tablespace/nnc_data03.dbf
NNC_DATA03

/opt/tablespace/nnc_index01.dbf
NNC_INDEX01

/opt/tablespace/nnc_index02.dbf
NNC_INDEX02

FILE_NAME
--------------------------------------------------------------------------------
TABLESPACE_NAME
------------------------------
/opt/tablespace/nnc_index03.dbf
NNC_INDEX03

22 rows selected.

SQL> drop tablespace NNC_INDEX03 including contents and datafiles;

Tablespace dropped.

SQL> drop tablespace NNC_DATA01 including contents and datafiles;

Tablespace dropped.